LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

LM 10

FOURTH SEMESTER – APRIL 2006

                                                   CH 4501 – INORGANIC CHEMISTRY – II

(Also equivalent to CHE 506)

 

 

Date & Time : 27-04-2006/9.00-12.00         Dept. No.                                                       Max. : 100 Marks

 

 

Part – A

Answer all the questions                    (10 ´ 2 = 20)

 

1. Name any two alloys of copper and give the composition.
2. How does KMnO₄ on acidic medium act as an oxidizing agent? Give the chemical equation.
3. ‘Zinc does not show variable oxidation state’. Explain.
4. What is EAN rule? Calculate EAN for K₃[Fe(CN)₆].
5. What is the source of the presence of crystal defects in regular solids?
6. Give the structure of EDTA and indicate the coordination sites.
7. What are fertile and fissile isotopes? Give examples.
8. Half life of Po²¹⁰ is 140 days. Calculate the number of days after which 1/4g of Po²¹⁰ will be left undisintegrated from 1g of the isotope?
9. What are isotopes and isotones? Give an example for each.
10. Account for the fact that the conductivity of the metal decreases if the temperature is increased.

Part – B

Answer any eight questions                 (8 ´ 5 = 40)

 

11. Explain the zone refining and cyanide processes of refining of metals.
12. What is lanthanide contraction? How are individual lanthanides separated by ion-exchange chromatography techniques.
13. Predict the geometry of [Co(CN)₆]^3-(diamagnetic) and [CoF₆]^3-(paramagnetic) using VB theory.
14. What are electron capture process and spallation reaction? Give an example for each.
15. Explain the various steps involved in the extraction of Uranium (Give chemical reactions wherever necessary).
16. Calculate the CFSE for octahedral, high and low spin d⁴ and d⁷
17. a) Differentiate hydrogen bomb and atom bomb
    b) Complete the nuclear reaction:

                                                       ₁₂Mg²⁴ (₂He⁴, ₀n¹ )    ;      ₁₇Cl³⁵( ₀n¹, ₁H¹)

18. Derive the relationship between half-life period,t_1/2 and decay constant, K of a radioactive element.
19. Explain Geiger-Nuttal rule with suitable example.
20. (a) Calculate the density of nucleus of ⁸¹Br isotope.
    (b) In a period of time ²³⁶U was found to have permitted 7 alpha particles and four beta particles. Find the final product.
21. Explain the conducting behaviour of metals using band theory.
22. Define unit cell. Discuss the structure of Nacl unit cell.

 

Part – C

Answer any four questions                 (4 ´ 10 = 40)

 

23. Explain the significances of Ellingham diagram in the conversion of metallic oxide to metal in the metallurgical process?
24. Discuss (a) hydrate (b) linkage   (c) ionization and (d) geometrical isomerism exhibited by coordination compounds with suitable examples.
25. Discuss the splitting of d-orbitals of metals in square planar environment of ligands.
26. Discuss the factors affecting the stability of a nucleus.
27. Explain the working principles of a nuclear reactor and breeder reactor. Describe the working of a nuclear reactor to generate electricity.
28. (a) What is the principle of X-ray diffraction techniques? (b) Explain the single crystal diffraction technique.

 

.

Go To Main Page

 

Latest Govt Job & Exam Updates:

View Full List ...