B.Sc. Chemistry Question paper

“Loyola College B.Sc. Chemistry Nov 2012 Physics For Chemistry – II Question Paper PDF Download”

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

THIRD SEMESTER – NOVEMBER 2012

PH 3202 – PHYSICS FOR CHEMISTRY – II

 

 

Date : 09/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A

Answer ALL questions:                                                                                                         (10×2=20)

  1. Find the compliment of (A + B)(B + C)(C + A)
  2. What are shift registers?
  3. State Pauli’s exclusion principle.
  4. Mention any two applications of X – rays
  5. What is Bohr magneton?
  6. Write down the semi – empirical mass formula.
  7. What is the effect of humidity on the velocity of sound?
  8. Distinguish between reverberation and echo.
  9. Find the de Broglie wave length associated with a thermal neutron at room temperature 37oC? k = 1.38 x 10-23JK-1 and h = 6.63 x 10-34J s-1
  10. Write down the Schrodinger wave equation of a particle moving through a potential V = kx2

PART – B

Answer any FOUR questions                                                                                                (4×7.5=30)

  1. Explain the working of a clocked R S flip flop using NAND gates.
  2. Explain the formation of sodium doublet.
  3. Write a short notes on any three properties of a nucleus.
  4. With a neat circuit diagram explain the production of ultrasonic waves by Piezoelectric effect.
  5. Using uncertainty principle, prove that electron cannot exist inside the nucleus and hence evaluate the Bohr radius.

PART – C

Answer any FOUR questions                                                                                                (4×12.5=50)

  1. Realize using only NAND gates the following combinational circuit. Use K map to obtain the minimal expression
  2. State the laws of photoelectric emission? Obtain Einstein’s photoelectric equation.
  3. Study the variation of binding energy with atomic mass. Explain how this graph can be used to identify two mechanisms of nuclear energy.
  4. Obtain Newton’s formula for velocity of sound in gases. Why did Laplace correct this expression? What is the correct expression?
  5. With a neat schematic explain how the wave nature of a moving particle was established through Davisson – Germer experiment.

 

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“Loyola College B.Sc. Chemistry Nov 2012 Physical Chemistry – II Question Paper PDF Download”

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc., DEGREE EXAMINATION – CHEMISTRY

FIFTH SEMESTER – NOVEMBER 2012

CH 5500 – PHYSICAL CHEMISTRY – II

 

 

 

Date : 03/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART A

Answer All the questions:                                                                                                     10×2=20

 

  1. Define EMF.
  2. What is calomel electrode?
  3. Calculate the ionic strength of 0.1M A12(SO4)
  4. What is concentration polarization?
  5. Distinguish between order and molecularity.
  6. Sketch the energy profile of a reaction and explain energy of activation.
  7. Enlist the factors which influence enzyme catalysis.
  8. Write the Langmuir adsorption isotherm.
  9. Quantum yield of photochemical H2 –C12 reaction is very high. Why?
  10. State Einstein’s law of photochemical equivalence.

PART B

 

Answer any EIGHT of the following:                                                                                 8×5=40

 

  1. Derive Nernst equation.
  2. How will you determine PH of a solution using glass electrode?
  3. Describe the construction and working of Weston cell.
  4. Write any one method of determining transference number.
  5. Discuss Debye-Huckel theory of activity coefficients.
  6. Explain reversible, consecutive with one example.
  7. Radioactive strontium-90 has a half life of 28.8 years. How many years will it take for 99% of a given sample of strontium-90 to disintegrate?
  8. Discuss the kinetics of unimolecular reactions using Lindemann theory.
  9. Derive Michaelis – Menton equation.
  10. List out the differences between chemisorptions and physisorption.
  11. What are pseudo order reactions? Explain.
  12. Deduce Langmuir adsorption isotherm.
  13. Explain photosensitized reaction with an example.

PART C

Answer any FOUR of the following:                                                                                  4×10=40

 

  1. a) Derive relationships between EMF and (i) ∆G (ii) ∆S.
  2. b) How will you find the solubility product of AgCI by EMF measurements?
  3. a) Write a note on potentiometric titrations.
  4. b) Give the merits and demerits of DME.

 

  1. a)Discuss Arrhenius theory of electrolytic dissociation.
  2. b) Define equivalent conductance. How will it vary with dilution of

(i) a strong electrolyte.

(ii) a weak electrolyte.

 

  1. a) Derive rate equation for a second order reaction of type 2A products.
  2. b) Describe graphical method of determining order of a reaction.

 

  1. Explain Absolute reaction rate theory.

 

  1. a) Apply Langmuir adsorption isotherm to slightly adsorbed systems.
  2. b) Discuss the applications of flash photolysis.

 

 

 

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“Loyola College B.Sc. Chemistry Nov 2012 Phase Equilibria And Kinetics Question Paper PDF Download”

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

FIFTH SEMESTER – NOVEMBER 2012

CH 5507 – PHASE EQUILIBRIA AND KINETICS

 

 

 

Date : 06/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A

 

Answer ALL questions:                                                                                           (10 x 2 = 20 marks)

 

  1. Define the term phase.
  2. What is congruent melting point?
  3. State Raoults’ law.
  4. In the distillation of liquid L by steam, the mixture boils at 99oC at a pressure 760 mm. At this

temperature the vapour pressure of water is 733 mm.   The composition of distillate is H2O; L = 4:1.

Calculate the molecular weight of liquid L from this data.

  1. Define the order of a reaction.
  2. What are pseudo first order reactions? Give an example.
  3. Write the Arrhenius equation and define the terms involved in it.
  4. What are parallel reactions? Give an example.
  5. What is acid-base catalysis?
  6. What is Wilkinson’s catalyst? Write one application of it.

 

PART – B

 

Answer any EIGHT questions:                                                                               (8 x 5 = 40 marks)

 

  1. Derive Clausius – Clapeyron equation. Give its applications.
  2. Discuss the salient features of the phase diagram of Lead-Silver system.
  3. Explain critical solution temperature. What is the effect of addition of solute on it?
  4. Discuss Van’t Hoffs’ theory of dilute solutions.
  5. A solution containing 3.975 g of sulphur in 100 g of CS2 boils at 319.67 K. The boiling point of pure

CS2  is 319.30 K  and ΔHvap = 27.78 kJ mol-1.   Calculate the molecular formula of sulphur in carbon

disulphide.

  1. Derive the rate constant for First order reaction.
  2. A second order reaction in which the initial concentrations of both the reactants are equal (i.e. a = b =

1 mol dm-3) proceeds to an extent of 25% in 5 hrs.   How long will it take for the reaction to be

completed to the extent of 60%?

  1. Explain the reversible reaction with an example.

 

  1. Discuss the ARRT in detail.
  2. Explain the steps involved in the thermal dissociation of acetaldehyde reaction.
  3. Discuss the homogenous catalysis with an example.
  4. Explain the Langmuir’s unimolecular adsorption isotherm.

 

PART – C

 

Answer ANY FOUR questions:                                                                              (4 x 10 = 40 marks)

 

  1. Explain and draw the phase diagram of Ferric – Chloride – water system.

Apply the relevant phase rule equation.

 

  1. Write notes on any TWO:
  2. a) Solvent Extraction
  3. b) Phase diagram of three component system
  4. c) Nernst distribution law
  5. d) Phase diagram of Sulphur system.

 

  1. Derive thermodynamically the relationship between elevation in boiling point of a solution and its

molality.

 

  1. Explain any THREE methods of determining order of a reaction.

 

  1. Explain the collision theory of bimolecular and unimolecular reactions.

 

  1. Derive Michaelis – Menton equation and discuss the kinetics of enzyme catalysis.

 

 

 

 

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“Loyola College B.Sc. Chemistry Nov 2012 Organic Functional Groups – II Question Paper PDF Download”

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc., DEGREE EXAMINATION – CHEMISTRY

FIFTH SEMESTER – NOVEMBER 2012

CH 5505 – ORGANIC FUNCTIONAL GROUPS – II

 

 

 

Date : 01-11-2012              Dept. No.                                        Max. : 100 Marks

Time : 9.00 – 12.00

 

PART – A

Answer ALL questions:                                                                                            (10 × 2 = 20)

 

  1. How will you prepare ethylamine by Gabriel phthalimide synthesis?
  2. How will you prepare diphenyl amine?
  3. Methyl amine is more basic than aniline.Explain.
  4. What are erythro and threo isomers?
  5. Are all substances with chiral atoms optically active and resolvable?Explain.
  6. What is meant by tautomerism?Give an example.
  7. Give an example of molecular rearrangement involving migration of a group from oxygen atom to aromatic ring.
  8. What is isoprene rule?
  9. What are alkaloids?
  10. Suggest any two tests to prove the presence of alkaloids.

 

PART – B

Answer any EIGHT questions:                                                                                   (8 × 5 = 40)

 

  1. Arrange the following compounds in decreasing order of basicity and give reasons

for your answer.

Aniline , p-nitro aniline , m- nitro aniline , p-methyl aniline

  1. Starting from aniline how will you synthesize the following?
  2. i) sulphanilic acid
  3. ii) benzoic acid

iii) phenyl isocyanate

  1. Explain why racemic tartaric acid can be resolved but not meso tartaric acid. Give the chemical method of resolution.
  2. Differentiate between enantiomers and diastereomers by taking suitable examples.

 

  1. What happens when the following pair undergoes Claisen condensation?

Ethyl formate and ethyl acetate. Suggest a suitable mechanism.

  1. What do you understand by active methylene group? Highlight its significance in organic synthesis.
  2. Discuss the mechanism of pinacol – pinacolone rearrangement and give the evidence for carbonium ion intermediate.
  3. Discuss Claisen rearrangement and give suitable evidence to confirm that the rearrangement is intramolecular.
  4. Electrophilic substitution takes place in C-2 position and not in C-3 position in Furan. Explain.
  5. Outline the synthesis of nicotine.
  6. Explain the role of Herzig-Meyer method and Zeisel’s method in the structural elucidation of alkaloids.
  7. Discuss the mechanism of nitration of benzene and explain why nitro group is a

deactivating group.

 

                                                            PART – C      

Answer any four questions:                                                                                    (4 × 10 = 40)

 

  1. Give an example for the following name reaction.
  2. Sandmeyer reaction ii)  Gomberg reaction
  • Gattermann reaction iv) Carbylamine reaction
  1. Schiemann reaction

 

  1. a) How will you synthesize ortho and meta dinitro benzene from benzene . (6)
  2. b) How will you distinguish primary secondary and tertiary amines by Hinsberg

method.                                                                                                                                 (4)

 

  1. a) Explain asymmetric synthesis with suitable examples. (6)
  2. b) Discuss the stereo chemistry of Walden inversion                                           (4)

 

  1. How will you prepare the following from acetoacetic ester?
  2. Acetonyl acetone ii) n-butyric acid       iii)  antipyrine
  3. 3-methyl 2-pentanone v) Succinic acid
  4. Complete the following:
  5. Furan + maleic anhydride à ii) Pyrrole + C6H5N2Cl + NaOH à

iii) Quinoline +KMnO4à                  iv) Pyridine + nC6H5Li à

  1. Thiophene + H2SO4 à
  2. a) Explain the following rearrangements with mechanism.             (6)
  3. Benzilic acid    ii) Beckmann.
  4. b) Write the structure of piperine and give its synthesis. (4)

 

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“Loyola College B.Sc. Chemistry Nov 2012 Organic Functional Groups – I Question Paper PDF Download”

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc., DEGREE EXAMINATION – CHEMISTRY

THIRD SEMESTER – NOVEMBER 2012

 CH 3502 /4500 – ORGANIC FUNCTIONAL GROUPS – I

 

 

 

Date : 02-11-2012              Dept. No.                                        Max. : 100 Marks

Time : 9.00 – 12.00

 

PART-A

ANSWER ALL THE QUESTIONS:                                                                                     (10×2=20)

  1. What is Walden inversion?
  2. Arrange the following alkyl halides in the order of decreasing reactivity in SN1 reaction

RI,  RCl,  RBr,  RF

  1. Name the reagents used in the following conversions:
  2. a) Ethyl amine into ethyl alcohol b) Acetone into t-butyl alcohol
  3. What happens when ethanol is heated with I2 and NaOH?
  4. What are mixed ethers? Give examples.
  5. How is anisole prepared from phenol? Give the IUPAC name of anisole.
  6. What is Wolf- Kishner reduction?
  7. What is crossed Cannizzaro reaction?
  8. What is SNi reaction?
  9. What happens when crotonic acid reacts with HBr?

 

PART-B

ANSWER ANY EIGHT QUESTIONS                                                                             (8×5=40)

 

  1. Name the major product obtained when 2-chloro-2-methylbutane is treated with alc. KOH and give reason.
  2. Compare the salient features of SN1 and SN2 reactions.
  3. Explain the mechanism of Reimer-Tiemann reaction.
  4. How are 1-propanol and 2-propanol prepared by hydroboration method? Explain why hydroboration violates Markovnikov’s rule.
  5. How does phenol differ from aliphatic alcohols?
  6. Explain Williamson’s synthesis of ethers.
  7. Give reason for the following observations: a) Ethers have low boiling points than isomeric alcohols b) Diphenyl ether cannot be prepared by the dehydration of phenol.

 

  1. Account for the following:
  2. a) Carbonyl compounds are polar in nature
  3. b) –CHO group is meta directing in aromatic electrophilic substitution reactions.
  4. Explain the mechanism of conversion of acetaldehyde into β-hydroxybutyric acid.
  5. Discuss the mechanism of reaction of benzaldehyde with KCN.
  6. Arrange the following acids in the increasing order of acidity and give reason:

acetic acid, fluoroacetic acid, bromoacetic acid,  chloroacetic acid.

  1. Give any two methods of preparation of succinic acid. What happens when
  2. a) Succinic acid is heated with NH3 b) Malonic acid is treated with P2O5. (3+2)

 

SECTION-C

       ANSWER ANY FOUR QUESTIONS:                                                                      (4×10=40)

 

  1. Discuss the effect of the following factors on E1 reaction:
  2. a) Structure of alkyl halides b) Strength of the base   c) Polarity of the solvent
  3. How is phenol prepared from benzene? How are the following compounds obtained from

phenol?  a) benzene b) picric acid c) azo dye

  1. a) How is ethylene oxide prepared? Mention its important synthetic uses.
  2. b) Discuss the cleavage reactions of ethers by HI.
  3. Discuss the following reactions with mechanism
  4. a) Wittig reaction b) Norrish type- I reaction (5+5)
  5. a) Discuss the mechanism of Michael addition reaction.
  6. b) Discuss the action of heat on dicarboxylic acids.
  7. a) Predict the products of the following reactions:
  8. i) Acetamide  +  P2O5   →
  9. ii) Acetyl chloride  +  H2/ Pd-BaSO4   →

iii)  Methyl acetate  +  Ethanol  →

  1. iv) Adipic acid  +  (CH2)6(NH2)2   →
  2. v) Acetaldehyde  +  malonic ester  →

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“Loyola College B.Sc. Chemistry Nov 2012 Mathematics For Chemistry Question Paper PDF Download”

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

FIRST SEMESTER – NOVEMBER 2012

MT 1102 – MATHEMATICS FOR CHEMISTRY

 

 

Date : 03/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

Part A

 

 

Answer ALL questions:                                                                   (10 x 2 =20)

 

  1. Differentiate with respect to .
  2. Find the slope of the tangent at to the curve
  3. Change the limits of as lower limit to  and upper limit to .
  4. Solve .
  5. State Binomial theorem.
  6. Solve the partial differential equation .
  7. State DeMoivre’s theorem.
  8. Show that
  9. From a well-shuffled pack of 52 cards, one card is drawn at random. What is the probability that it will be (i) a jack (ii) a spade?
  10. Define Normal distribution.

Part B

Answer any 5 questions:                                                                   (5 x8 = 40)

 

  1. Find the angle of intersection of the cardioids and

.

  1. If  , then show that .
  2. Evaluate: (i), using Bernoulli’s formula.

(ii) Evaluate: .                                        (4+4)

  1. Solve the differential equation .
  1. Find the sum of the series
  2. If , then show that
  3. Obtain the expansion of .
  4. Find the maxima and minima of the function .

 

Part C

Answer any TWO questions:                                                                       (2 x 20 = 40)

 

  1. (i) Evaluate:

(ii) Prove that .                                          (10+10)

 

  1. (i)Obtain the characteristic roots and the associated characteristic vectors of the

matrix  .

(ii) Solve the partial differential equation with usual notations.     (15+5)

 

  1. Given that in the interval 0 to . Find the Fourier coefficients  and .Hence deduce that .

 

  1. (i)Expand in series of cosines of multiples of .

(ii)The mean mark of  students were found to be 40. Later it was observed that a score of 53 was misread as 83. Find the correct mean using the correct score.

(14+6)

 

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“Loyola College B.Sc. Chemistry Nov 2012 Mathematics For Chemistry (2) Question Paper PDF Download”

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

THIRD SEMESTER – NOVEMBER 2012

MT 3103 – MATHEMATICS FOR CHEMISTRY

 

 

Date : 07/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

 

Section A

 

Answer ALL the questions:                                                                           (10 ´ 2 = 20)

 

  1. Differentiate with respect to x.
  2. If , find .
  3. Evaluate .
  4. Solve .
  5. Write the binomial expansion for
  6. Prove that .
  7. Solve .
  8. Prove that .
  1. Show that .
  1. What is the chance that the leap year selected at random will contain 53 Sundays?

 

Section B

Answer any FIVE questions:                                                                           (5 ´ 8 = 40)

 

  1. (a) If , find .

(b) Find the differential coefficient of  .

 

  1. Find the angle of intersection of the cardioids

and .

 

  1. Evaluate .

 

  1. Prove that .
  2. Sum the series to infinity
  3. Express in series of powers of

 

  1. Solve .

 

  1. A car hire firm has two cars, which it hires out day by day. The number of demands for a car on each day is distributed as a Poisson distribution with mean 1.5. Calculate the proportion of days on which (i) neither car is used, and (ii) the proportion of days on which some demand is refused.

 

Section C

 

Answer any TWO questions:                                                                               (2 ´ 20 = 40)

 

  1. a) Find the equation of the tangent and normal to the curve , at .

 

  1. b) Find the maxima and minima of the function .

(10 + 10)

 

  1. a) Integrate with respect to x.

 

  1. b) Solve .                                                                            (12 + 8)

 

21.a)       Expand   in a series of cosines multiples of

.

 

  1. b) Show that

(10 + 10)

 

  1. a) Show that   in the interval  . Also deduce that

 

  1. b) An insurance company insures 4,000 people against loss of both eyes in a car accident. Based on previous data, the rates were computed on the assumption that on the average 10 persons in 1,00,000 will have car accident each year that result in this type of injury. What is the probability that more than 3 of the insured will collect on their policy in a given year?

( 12 + 8)

 

 

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“Loyola College B.Sc. Chemistry Nov 2012 Main Group Elements & Solid State Chemistry Question Paper PDF Download”

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

THIRD SEMESTER – NOVEMBER 2012

CH 3503/CH 4501 – MAIN GROUP ELEMENTS & SOLID STATE CHEMISTRY

 

 

 

Date : 05/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART A

Answer ALL the questions:                                                                                                 (10×2=20)

 

  1. Mention any two oxides of the alkali metals.
  2. Explain the action of water on Na. Give the reaction.
  3. What is hydro oration rraction?
  4. Define catenation.
  5. How is sodium bismuthate prepared? Mention its use.
  6. List the oxyacids of nitrogen.
  7. What are pseudohalogens?
  8. Give the structure of BrF3
  9. If the radius ration is 0.85. Determine the coordination number and geometry of the crystal.
  10. Draw the unit cell of Cs

PART B

Answer any EIGHT questions:                                                                                               (8×5=40)

 

  1. Write briefly on crown ethers.
  2. Discuss the preparation, Chemical properties and uses of hydrazine.
  3. Explain the bonding of diborane.
  4. Discuss the classification of carbides.
  5. Explain limiting radius ration. How is it used to determine the geometry of the crystal?
  6. Discuss the principle of X-ray diffraction.
  7. The strength of the oxy acids of halogens are of the order HXO4>HXO3>HXO2>HOX. Give reason.
  8. How are the following prepared? Give the Chemical reaction involved.
  9. Chlorine dioxide b) Oxygen difluoride              c) Iodine pentoxide
  10. What is superphosphate of lime? Give its preparation.
  11. Write a brief note on the organomettalic compounds of Li and Be.
  12. What is borax bead test? Explain.
  13. a) List the oxyacids of phosphorous.
  14. Write briefly on sulphides of phosphorous.

PART C

Answer any FOUR questions:                                                                                             (4×10=40)

 

  1. What are silicates? Discuss the classification with an example each.
  2. Give a comparative account of the oxides, carbonates, hydroxides and halides of alkali metals.
  3. What are crystal defects? Discuss the Schottky and Frenkel defects of crystals.
  4. How are oxides classified? Explain giving an example each.
  5. Discuss the crystal structure of sodium chloride and Zinc sulphide.
  6. How is available chlorine in bleaching powder estimated? Explain.

 

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“Loyola College B.Sc. Chemistry Nov 2012 Gen. Chemistry For Physics & Maths Question Paper PDF Download”

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHS & PHYSICS

SECOND SEMESTER – NOVEMBER 2012

CH 2100/2102 – GEN. CHEMISTRY FOR PHYSICS & MATHS

 

 

Date : 03/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

 

PART-A

Answer ALL questions:                                                                                    (10×2 = 20)

 

  1. What are ligands?
  2. Mention the role of chlorophyll in photosynthesis.
  3. Define the following: (a) Chirality (b) Inductive effect
  4. Cyclohexane chair conformer is more stable than its boat conformer.Why?
  5. State Raoult’s law.
  6. What is phase rule?
  7. What is meant by replication of DNA?
  8. Give the structure of thyroxin.
  9. Give one example for each of the following:

(i) Natural polymer                 (ii) Biopolymer

  1. How is polystyrene prepared?

 

PART-B

Answer ANY EIGHT questions:                                                                  (8 ×5 = 40)

 

  1. Discuss the general properties of transition elements.
  2. Explain the EAN principle with any one example.
  3. How is hardness of water determined by EDTA? Explain.
  4. Explain the mechanism of SN2 reaction.
  5. Write any one aromatic electrophilic substitution reaction with mechanism.
  6. How will you differentiate cis– and trans– isomers? Explain.
  7. Discuss the different types of solutions with example.
  8. Explain the determination of pH using glass electrode.
  9. Derive half lifetime (t1/2) for the first order reaction.
  10. Compare thermal and photochemical reactions.
  11. Give the structure of the following compounds.

(i) Cortisone                   (ii) prostaglandins

  1. Write a note on vulcanization of rubber.

 

 

 

 

 

PART-B

Answer ANY  FOUR questions:                                                                   (4 ×10 = 40)

 

  1. a) Discuss the postulates of Werner’s theory.
  2. b) Explain the applications of Pauling’s theory with any one example.
  3. a) Define the following with the structure of tartaric acid.
  4. b) Discuss the conformational analysis of ethane.
  5. Define the following:

(i) Phase      (ii) Component     (iii) Degree of freedom

(iv) Homogeneous catalysis     (v) Heterogeneous catalysis

  1. Write a note on (a) phenol-water system (b) Laws of photochemistry.
  2. Discuss the structure of DNA with neat diagram.
  3. (a) Write the electrochemical mechanism of corrosion.

(b)  Explain any two methods to prevent corrosion.

 

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“Loyola College B.Sc. Chemistry Nov 2012 Fundamentals Of Spectrascopy Question Paper PDF Download”

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

FIFTH SEMESTER – NOVEMBER 2012

CH 5508 – FUNDAMENTALS OF SPECTRASCOPY

 

 

 

Date : 08/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A

 

Answer ALL questions:                                                                                           (10 x 2 = 20 marks)

 

  1. Define the term resolution.
  2. The wavelength of a radiation is 2.5 x 10-6m. Calculate its frequency.
  3. State Beer Lamberts’ law.
  4. What are auxochromes? Give an example.
  5. What are monochromators?
  6. What is Rayleigh scattering?
  7. Define coupling constant.
  8. Define Larmour precessional frequency.
  9. What is an isotopic peak?
  10. What is FAB?

PART – B

Answer any EIGHT questions:                                                                               (8 x 5 = 40 marks)

 

  1. Explain the terms line width and intensity of spectral lines.
  2. Discuss the types of transitions in molecules.
  3. Discuss the instrumentation of photocolorimeter.
  4. Explain the applications of Flame photometry.
  5. Discuss the differences between IR and Raman Spectroscopy.
  6. Explain the source and the sampling technique in IR spectroscopy.
  7. Explain the following terms:

(i) Fundamental vibration           (ii) Over tones

  1. Explain the basic instrumentation of NMR spectroscopy.
  2. Explain the pmr spectrum of CH3CHO and pure CH3CH2OH.
  3. A compound having the molecular formula C10H14 gave the following pmr data:

(a) A singlet 9H (d = 0.88)

(b) A singlet 5H (d = 7.28) Give the structure of the compound.

  1. Describe the importance of metastable peak in mass spectral analysis.
  2. Explain the mass spectrum of Benzyl alcohol.

 

PART – C

 

Answer ANY FOUR questions:                                                                              (4 x 10 = 40 marks)

 

  1. a) Explain Frank-Condon principle. (6)
  2. b) Benzene is colourless but its isomer, fulvene is yellow. Explain.                                            (4)

 

  1. Explain the principle, instrumentation and applications of atomic absorption spectroscopy.                                            (2+4+4)

 

  1. a) Discuss the theory of Raman Spectroscopy. (5)
  2. b) Explain how IR spectroscopy can be used to differentiate inter and intra molecular hydrogen

bonding.                                                                                                                                        (5)

 

  1. a) Explain the types of stretching and bending vibrations of CO2.      (6)

 

  1. b) Discuss Fermi-resonance.                                                                                                             (4)

 

  1. a) Explain the term chemical shift. What are factors influencing it?                                              (6)
  2. b) Explain deuterium labelling in NMR.                                                                                          (4)

 

  1. a) Illustrate Mclafferty rearrangement with a suitable example.                             (5)
  2. b) Explain the instrumentation of mass spectrometer.                                                                    (5)

 

 

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“Loyola College B.Sc. Chemistry Nov 2012 Chemistry For Biologists – I Question Paper PDF Download”

by

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & ADV. ZOOLOGY

FIRST SEMESTER – NOVEMBER 2012

CH 1100 – CHEMISTRY FOR BIOLOGISTS – I

 

 

Date : 03/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

 

 

Part – A

Answer all the questions:                                                                                                            (10 × 2 = 20)

  1. Define relative error.
  2. Why TLC is superior to paper and column chromatography?
  3. What are adsorbents? Give an example.
  4. What is intermolecular hydrogen bonding? Give an example.
  5. What is dipole – dipole interaction?
  6. What are hormones?
  7. Define normality?
  8. What is enzyme catalyst?
  9. Give the source and deficiency of vitamin A.
  10. Draw the structure of vitamin E.

 

Part – B

Answer any eight questions:                                                                                                       (8 × 5 = 40)

  1. Mention five points of handling of acids.
  2. Explain the factors affecting Rf
  3. Discuss the crystal structure of CsCl.
  4. What are the factors involving the formation of ionic bond?
  5. Discuss the hybridization and geometry of CH4 and H2
  6. List the postulates of Werner’s theory.
  7. Discuss the geometrical isomerism of octahedral complexes.
  8. Give the difference between molecularly and order.
  9. Discuss the occurrence and composition of fats.
  10. What is the biological effects and thyroid hormones?
  11. Explain the mechanism of acid buffer.
  12. What are secondary standard solutions and how are they standardised?

 

 

 

 

Part – C

Answer any four questions:                                                                                                   (4 × 10 = 40)

  1. What are the prerequisites for choosing adsorbents?
  2. Describe the three types of adsorbents with suitable example.
  3. a) Discuss the optical isomerism of octahedral complexes.(7)
  4. b) What are polydentate ligands? Give an example. (3)
  5. a) What is rate law? Derive the rate expressions for I order reactions.(5)
  6. b) What are the prerequisites for the preparation of primary standard solutions?(5)
  7. What is catalyst? Explain homogeneous and heterogeneous catalyst with suitable example.
  8. Explain in detail the structure and function of vitamin A, C, D, K and E.

 

 

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“Loyola College B.Sc. Chemistry Nov 2012 Chemistry For Biologists – I Question Paper PDF Download”

by

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & ADV. ZOOLOGY

THIRD SEMESTER – NOVEMBER 2012

CH 3104 – CHEMISTRY FOR BIOLOGISTS – I

 

 

Date : 07/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

SECTION – A

Answer all the questions:                                                                                                               10 × 2 = 20

  1. Mention any four important properties of ionic compounds.
  2. Define molarity.
  3. What is the biological significance of hemoglobin?
  4. What is a buffer solution?
  5. State rate law.
  6. Give any two examples for zero order reaction.
  7. What are lyophilic colloids? Give an example.
  8. Mention two applications of colloids in medicine.
  9. How is nylon-6,6 prepared?
  10. Draw the resonance structure of aniline.

SECTION – B

Answer any eight questions:                                                                                                            8 × 5 = 40

  1. Write a note on dipole-induced dipole interaction.
  2. Explain the various factors affecting the formation of ionic bond.
  3. Describe the geometrical isomerism in square planar complexes.
  4. Calculate the normality and molarity of a solution of H2SO48 g/l.
  5. Explain the buffer action using acidic buffer.
  6. Differentiate homogeneous catalysis from heterogeneous catalysis.
  7. Derive an expression for the first order rate equation.
  8. What is electro osmosis?
  9. Explain coagulation?
  10. Explain the types of polymerization with an example for each.
  11. How will you convert natural rubber into hard rubber?
  12. What is mesomeric effect? Explain.

SECTION – C

Answer any four questions:                                                                                                          4 X 10 = 40

  1. a) Draw the crystal structure of NaCl and explain.
  2. b) What is meant by hybridisation?                       (6+4)
  3. What are primary and secondary standard solutions? Explain the important characteristics of a primary standard solution.
  4. a) Explain Michaelis – Menten equation.
  5. b) What are catalytic poisons? (8+2)
  6. Explain the optical and kinetic properties of colloids.
  7. a) Describe the optical isomerism exhibited by tartaric acid.
  8. b) What are polydentate ligands? Give an example. (7+3)
  9. a) Mention the differences between HDPE and LDPE
  10. b) What are homo and co polymers? Give an example for each type. (5+5)

 

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“Loyola College B.Sc. Chemistry Nov 2012 Basic Concepts In Inorganic Chemistry Question Paper PDF Download”

by

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

FIRST SEMESTER – NOVEMBER 2012

CH 1506/CH 1503/CH1500 – BASIC CONCEPTS IN INORGANIC CHEMISTRY

 

 

Date : 10/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

 

PART A

Answer ALL questions:                                                                                           (10 x 2 = 20 marks)

 

  1. State the modern periodic law.
  2. Define Hund’s rule of maximum multiplicity.
  3. Explain the enthalpy of solutions.
  4. Mention any two important properties of ionic compounds.
  5. Draw the electron dot structure of Nacl and NH3.
  6. State octet rule.
  7. What are semiconductors? Give an example
  8. H2O is a liquid while H2S is a gas at 298k . Give reason and explain.
  9. Give one example for a double decomposition reaction.
  10. What are protonic and aprotic solvents?

 

PART B

Answer any EIGHT questions:                                                                               (8 x 5 = 40 marks)

 

  1. Discuss the horizontal and vertical relationship in periodic table.
  2. What is pauli’s exclusion principle and Heisenberg uncertainty principle?
  3. Mention the factors that affect lattice energy.
  4. State and explain fajan’s rule.
  5. Explain the different types of molecular orbitals.
  6. State Sidwick- Powel theory and explain its role in the prediction of molecular shapes.
  7. Write a note on london dispersive forces and van der waal’s forces.
  8. Explain Bohr’s
  9. Define hydrates and clathrates.  How are they formed?  Give example.
  10. State and explain Arrhenius theory.
  11. Discuss the role of liquid ammonia as a solvent.
  12. Explain inter and intra molecular hydrogen bonding and their consequences.

 

 

 

 

 

PART C

Answer any FOUR questions:                                                                                      (4 x 10 = 40 marks)

 

  1. Explain the trend in electronegativity and ionisation potential along a period.
  2. (a) Write the Born Lande equation and mention the significance of the terms involved.

(b) using Born–Haber cycle, arrive at the lattice energy for sodium chloride.

  1. State VSEPR theory, explain the geometry of the following compounds
  2. a)  NH3                              b) SF4                   c) ICl4–                d) XeF6
  3. Explain band theory of metals.
  4. Write short notes on any three of the following:

(a) Symbiosis

(b) Bronsted–Lowry theory of acids and bases.

(c) Lewis theory

(d) Lux–flood theory

(e) Clsanovich concept

  1.   Explain the following:

(a) Inert pair effect

(b) Avogadro principle

(c) Hybridisation

(d) n–p   Junction

(e) Pearson principle.

 

 

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“Loyola College B.Sc. Chemistry Nov 2012 Analytical Chemistry Question Paper PDF Download”

by

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

FIRST SEMESTER – NOVEMBER 2012

CH 1505/1502/5501 – ANALYTICAL CHEMISTRY

 

 

 

Date : 08/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART –A

 

Answer ALL the questions:                                                                                     (10 x2 =20 marks)

 

  1. Mention the antidote for CO and Pb2+ poisoning.
  2. List the number of significant figures in the following numbers
  3. i) 0.216 ii) 90.7
  4. Give the advantages of TLC.
  5. Define Sublimation.
  6. What are primary standards? Give an example.
  7. How many milliliters of 0.25 M solution of H2SO4 will react with 10 mL of 0.25 M solution of

NaOH?

  1. What are adsorption indicators?
  2. Define post precipitation.
  3. What quantity is measured in TGA and in DTA?
  4. Mention any two applications of TGA.

PART –B

 

Answer any EIGHT questions:                                                                          (8×5 =40 marks)

 

  1. Calculate the mean and the standard deviation of the following set of analytical results:

15.67, 15.69 and 16.03g

  1. How are poisonous chemicals stored in the laboratory?
  2. Discuss the principle and applications of Paper chromatography.
  3. How is the purity of a compound tested?
  4. Discuss the different titrimetric methods.
  5. Give the preparation of acid-base buffers.
  6. Discuss the principle of Steam distillation.
  7. Calculate the pH and pOH of a 1.00 x 10-3M solution of acetic acid.
  8. Explain the principle of complexiometric titration with a suitable example.
  9. Sketch the thermogram of calcium oxalate monohydrate. Discuss the Thermo gravimetric

analysis technique.

  1. Calculate the molar solubility of PbSO4 if the solubility product is 1.6 x 10 -8.
  2. What is von Weiman ratio? Define the terms in it.

 

PART -C

 

Answer any FOUR questions:                                                                                       (4×10 =40 marks)

 

  1. Discuss the theory of acid- base indicators with suitable examples.
  2. How is chloride determined by Volhard’s method?
  3. What are absolute and relative errors? Give the methods of minimizing errors.
  4. Explain the principle, technique and applications of ion-exchange chromatography.
  5. Discuss the instrumentation of thermogravimetric analysis.
  6. a) Give the properties and uses of drying agents.
  7. b) What are metal ion indicators? Explain their characteristics.

 

 

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B.Sc. Chemistry Physical Chemistry Sample Paper 1 (English & Hindi)

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Physical Chemistry – भौतिक  रसायन

Max Marks: 15

Note: The Internal Assignment has been divided into three sections A, B, and C. Write Answer as per the given instruction.

आतंरिक मूल्यांकन हेतु प्रश्न पत्र ‘A’,’B’ और ‘C’ तीन खण्डों में विभाजित है| प्रत्येक खण्ड के निर्देशानुसार प्रश्नों का उत्तर दीजिए|

 

Section-A

(Very Short Answer Type Questions) – अति लघु ऊत्तर वाले प्रश्न (अनिवार्य)

Note: Answer all questions. As per the nature of the question you delimit your answer in one word, one sentence or maximum up to 30 words. Each question carries 1/2 mark.  6×1/2 =03

नोट: सभी प्रश्नों का उत्तर दीजिए| आप अपने उत्तर को प्रश्नानुसार एक शब्द , एक वाक्य या अधिकतम 30 शब्दों में परिसीमित कीजिये| प्रत्येक प्रश्न ½ अंक का है| 6×1/2 =03

1. If nC15=nC13, Calculate value of n

यदि nC15=nC13, तो न का मान  ज्ञात कीजिये |

2. Write ideal gas equation for n moles of gas.

n मोल गैस के लिए आदर्श समीकरण लिखिए |

3. In total how many Bravias lattice are their?

कुल कितने ब्रेविस जालक होते हैं?

4. The word colloid is derived from ————-

कोलोइड शब्द…………… से उत्पन्न हुआ है  |

5. What do you mean by coagulation?

स्कंदन से आप क्या समझते हैं ?

6. Define de-emulsification.

विपयासिकरण को परिभाषित कीजिये |

 

Section-B

(Short Answer Questions) – लघु उत्तर वाले प्रश्न

Note: Answer any four questions. Each answer should not exceed 100 words. Each question carries 1.5 marks. 4×1.5=6

नोट: निम्नलिखित में से किन्हीं 4 प्रश्नों के उत्तर दीजिए| आप अपने उत्तर को अधिकतम 100 शब्दों में परिसीमित कीजिये| प्रत्येक प्रश्न 1.5 अंकों का है | 4×1.5=6

1. Define liquid state and explain various intermolecular forces.

द्रव अवस्था को परिभाषित करें तथा द्रव अवस्था के अंतर आणविक बालों को समझाइए |

2. Differentiate between Weiss indices and Miler indices with example.

वाइस एवं मिलर सूचकांक में उदाहरण सहित अंतर स्पष्ट कीजिये |

3. Describe Cottrell precipitator.

कोत्त्रेल अवक्षेपणन को समझाइए |

4. Give characteristics of collision theory.

संघट्ट सिद्धांत की बिशेश्तायें बताइए |

5. How will you determine order by half life method?

अर्द्ध आयु विधि से अभिक्रिया की कोटि किस प्रकार ज्ञात की जा सकती है ?

6. Give crystal structure of NaCl, KCl and CsCl.

NaCl, KCl व CsCl की क्रिस्टल संरचना समझाइए |

 

Section ‘C’

(Long Answer Questions) – (दीर्घ उत्तर वाले  प्रश्न)

Note: Answer any two questions. You have to delimit your each answer maximum up to 400 words. Each question carries 03 marks. 2×3=6

नोट : निम्नलिखित में से किन्हीं 02 प्रश्नों का उत्तर दीजिए|आपको अपने प्रत्येक उत्तर को अधिकतम 400 शब्दों में परिसीमित करना है| प्रत्येक प्रश्न 03 अंकों का है | 2×3=6

1. Derive Vander Waal equation .Also discuss its application.

वांडरवाल समीकरण व्युत्पन्न कीजिये तथा इसके उपयोगों पर प्रकाश डालें |

2. Define Gels and classify them. Also explain different properties exhibited by them.

जेल को परिभाषित एवं वर्गीकृत कीजिये | जेल के विभिन्न गुणों को समझाइए |

3. Derive the integrated rate equation for first order reaction and give its characteristics.

प्रथम कोटि अभिक्रिया के लिए समाकलित वेग समीकरण व्युत्पन्न कीजिये, साथ ही इस अभिक्रिया की विशेषताएं बताइए |

4. Explain the classification of computer in detail.

कंप्यूटर के वर्गीकरण को विस्तार से समझाइए |

B.Sc. Chemistry Organic Chemistry Sample Paper 1 (English & Hindi)

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Organic Chemistry – कार्बनिक रसायन

Organic Chemistry

कार्बनिक रसायन

Max Marks: 15

Note: The Internal Assignment has been divided into three sections A, B, and C. Write Answer as per the given instruction.

आतंरिक मूल्यांकन हेतु प्रश्न पत्र ‘A’,’B’ और ‘C’ तीन खण्डों में विभाजित है| प्रत्येक खण्ड के निर्देशानुसार प्रश्नों का उत्तर दीजिए|

Section-A

(Very Short Answer Type Questions) – अति लघु ऊत्तर वाले प्रश्न (अनिवार्य)

Note: Answer all questions. As per the nature of the question you delimit your answer in one word, one sentence or maximum up to 30 words. Each question carries 1/2 mark.  6×1/2 =03

नोट: सभी प्रश्नों का उत्तर दीजिए| आप अपने उत्तर को प्रश्नानुसार एक शब्द , एक वाक्य या अधिकतम 30 शब्दों में परिसीमित कीजिये| प्रत्येक प्रश्न ½ अंक का है| 6×1/2 =03

1. Define s-p overlapping.

s-p अतिव्यापन को परिभाषित करें|

2. Give an example of geometrical isomerism.

ज्यामितीय समवयावता का एक उदहारण दीजिए|

3. What is resolution?

वियोजन किसे कहते हैं ?

4. Write down Wurtz Fittig reaction in one line.

वुर्त्ज़ फित्तिग अभिक्रिया एक pa पंक्ति में लिखिए |

5. Give an example of secondary alkyl halide.

द्वितीयक अल्किल हैलाईड का एक उदहारण दीजिए |

6. Which gas is used for fruit ripening?

फल पकाने के लिया कौनसी गैस काम में ली जाती है?

 

Section-B

(Short Answer Questions) – लघु उत्तर वाले प्रश्न

Note: Answer any four questions. Each answer should not exceed 100 words. Each question carries 1.5 marks.4×1.5=6

नोट: निम्नलिखित में से किन्हीं 4 प्रश्नों के उत्तर दीजिए| आप अपने उत्तर को अधिकतम 100 शब्दों में परिसीमित कीजिये| प्रत्येक प्रश्न 1.5 अंकों का है| 4×1.5=6

1. Write a short note on inductive effect.

प्रेरनिक प्रभाव पर एक संक्षिप्त टिप्पणी लिखिए |

2. How would you obtain ethene from acetylene?

एसिटीलिन से एथीन कैसे प्राप्त करोगे ?

3. Explain Baeyer’s strain theory.

बेयर विकृतिवाद सिद्धांत को समझाइए |

4. Write down the different types of organic reactions

कार्बनिक अभिक्रियाओं के विभिन्न प्रकार लिखिए  |

5. Write molecular orbital theory.

आणविक कक्षक सिद्धांत लिखिए |

6. Write a short note on walden inversion.

वाल्डेन प्रतीपन पर संक्षिप्त टिप्पणी लिखिए |

 

Section ‘C’

(Long Answer Questions) – (दीर्घ उत्तर वाले  प्रश्न)

Note: Answer any two questions. You have to delimit your each answer maximum up to 400 words. Each question carries 03 marks. 2×3=6

नोट : निम्नलिखित में से किन्हीं 02 प्रश्नों का उत्तर दीजिए|आपको अपने प्रत्येक उत्तर को अधिकतम 400 शब्दों में परिसीमित करना है| प्रत्येक प्रश्न 03 अंकों का है | 2×3=6

1. Give the mechanism of electrophilic and free radical substitution in aliphatic compound.

एलीफैटिक यौगिकों में एलेक्ट्रोस्नेही एवं मुक्तमूलक अभिक्रियाओं की क्रियाविधि दीजिए |

2. Discuss the structure, generation and stability of aryne and nitrene.

एराइन एवं नाइट्रीन  की संरचना, उत्पत्ति एवं स्थायित्व की चर्चा कीजिये |

3. Write down the detail mechanism of nitration of benzene.

बेंजीन के नाइट्रीकरण की क्रियाविधि को समझाइए |

4. Write down the detail mechanism of sulfonation of benzene.

बेंजीन के सल्फोनिकरण की क्रियाविधि को विस्तार पूर्वक समझाइए |

 

B.Sc. Chemistry Inorganic Chemistry Sample Paper 1 (English & Hindi)

by

Inorganic Chemistry – अकार्बनिक रसायन

Max Marks: 15

Note: The Internal Assignment has been divided into three sections A, B, and C. Write Answer as per the given instruction.

आतंरिक मूल्यांकन हेतु प्रश्न पत्र ‘A’,’B’ और ‘C’ तीन खण्डों में विभाजित है| प्रत्येक खण्ड के निर्देशानुसार प्रश्नों का उत्तर दीजिए|

Section-A

(Very Short Answer Type Questions) – अति लघु ऊत्तर वाले प्रश्न (अनिवार्य)

Note: Answer all questions. As per the nature of the question you delimit your answer in one word, one sentence or maximum up to 30 words. Each question carries 1/2 mark.  6×1/2 =03

नोट: सभी प्रश्नों का उत्तर दीजिए| आप अपने उत्तर को प्रश्नानुसार एक शब्द , एक वाक्य या अधिकतम 30 शब्दों में परिसीमित कीजिये| प्रत्येक प्रश्न 1/2 अंक का है| 6×1/2=03

1. The co-ordination no. of is………

क्रिस्टल में की समन्वय संख्या ……….. है।

2. Write born equation for lattice energy/

जालिका ऊर्जा की बॉर्न समीकरण लिखिए।

3. From moving up to down in a group. Electronegaitivity value ………..

एक वर्ग में ऊपर से नीचे जाने पर विधुत ऋणता के मानों में …………. होती है।

4. …………….. molecule are absent in ultramarine silicates.

अल्ट्रमरीन सिलिकेट्स में ……. के अणु अनुपस्थित होते हैं।

5. Write the atomic no. and electronic configuration of Xenone.

जीनॉन का परमाणु क्रमांक व इलेक्ट्रॉन विन्यास लिखिए।

6. Write down the equation for calculation of percentage ionic characters on the basis of electronegativity.

विधुज ऋणता के आधार पर प्रतिशत आयनिक गुण निकालने की समीकरण दीजिए।

 

Section-B

(Short Answer Questions) – लघु उत्तर वाले प्रश्न

Note: Answer any four questions. Each answer should not exceed 100 words. Each question carries 1.5 marks. 4×1.5=6

नोट: निम्नलिखित में से किन्हीं 4 प्रश्नों के उत्तर दीजिए| आप अपने उत्तर को अधिकतम 100 शब्दों में परिसीमित कीजिये| प्रत्येक प्रश्न 1.5 अंकों का है | 4×1.5=6

1. Explain Metal excess defects with suitable examples.

उपर्युक्त उदाहरण द्वारा धातु आधिक्य त्रुटियाँ समझाइए।

2. What are sulphur nitrides ? Describe the preparation & properties of tetra sulphus tetranitride in brief.

सल्फर नाइट्राइड क्या होते हैं? संक्षिप्त में टेट्रा सल्फर टेट्रा नाइट्राइड की विरचन विधि एवं गुणों को समझाइए।

3. What is radius ratio rule? What are its uses?

त्रिज्या अनुपात नियम क्या होता है इसका क्या उपयोग होता है?

4. Explain Born-Haber cycle.

बॉर्न—हैबर—चक्र को समझाइए।

5. Explain Metal excess defects with suitable examples.

उपर्युक्त उदाहरण द्वारा धातु आधिक्य त्रुटियाँ समझाइए।

6. What is metallic bond?

धात्विक बंध किसे कहते हैं?

 

Section ‘C’

(Long Answer Questions) – (दीर्घ उत्तर वाले  प्रश्न)

Note: Answer any two questions. You have to delimit your each answer maximum up to 400 words. Each question carries 03 marks. 2×3=6

नोट : निम्नलिखित में से किन्हीं 02 प्रश्नों का उत्तर दीजिए|आपको अपने प्रत्येक उत्तर को अधिकतम 400 शब्दों में परिसीमित करना है| प्रत्येक प्रश्न 03 अंकों का है| 2×3=6

1. Explain bonding in carbon mono oxide molecule with the help of MOT as applied to heteronuclear diatomic molecules and gives it’s similarities with MOT.

कार्बन मोनेा आक्साइड की सहायता से के द्वारा विषम नाभिकीय अणु निर्माण को समझायें तथा से इसकी समानताएँ बताइए।

2. Explain in Detail the complexes of S-block element.

S-ब्लॉक तत्वों के संकुलों की व्याख्या कीजिए।

3. Explain chemical properties of noble gases.

उत्कृष्ट गैसों के रासायनिक व्यवहार को वर्णित करो।

4. What are silicates? Describe the various types of silicates on the basis of their structure. Give uses of Zeolites.

सिलिकेट्स क्या होते हैं? संरचना के आधार पर इसके प्रकार समझाइए। Zeolites के उपयोग दीजिए।

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