PART I : CHEMISTRY
Section-I
(Single Correct Answer Type)
The section contains 7 multiple choice questions. Each question has four choices (A), (B), (C) and (D) out of which ONLY ONE is correct.
1. Extra pure N2 can be obtained by heating
(A) NH3 with CuO
(B) NH4NO3
(C) (NH4)2Cr2O7
(D) Ba(N3)2
2. Geometrical shapes of the complexes formed by the reaction of Ni2+ with Cl−, CN− and H2O, respectively, are
(A) octahedral, tetrahedral and square planar
(B) tetrahedral, square planar and octahedral
(C) square planar, tetrahedral and octahedral
(D) octahedral, square planar and octahedral
3. Bombardment of aluminium by α-particle leads to its artificial disintegration in two ways, (i) and (ii) as shown. Products X, Y and Z respectively are,
(A) proton, neutron, positron
(B) neutron, positron, proton
(C) proton, positron, neutron
(D) positron, proton, neutron
4. Dissolving 120 g of urea (mol. wt. 60) in 1000 g of water gave a solution of density 1.15 g/mL. The molarity of the solution is
(A) 1.78 M
(B) 2.00 M
(C) 2.05 M
(D) 2.22 M
5. AgNO3 (aq.) was added to an aqueous KCl solution gradually and the conductivity of the solution was measured. The plot of conductance (⋀) versus the volume of AgNO3 is
(A) (P)
(B) (Q)
(C) (R)
(D) (S)
6. Among the following compounds, the most acidic is
(A) p-nitrophenol
(B) p-hydroxybenzoic acid
(C) o-hydroxybenzoic acid
(D) p-toluic acid
7. The major of the following reaction is
(A) 
(B) 
(C) 
(D) 
Section-II
(Multiple Correct Answer Type)
This section contains 4 multiple choice questions. Each question has four choices (A), (B), (C) and (D) out of which ONE or MORE may be correct.
8. Extraction of metal from the cassiterite involves
(A) carbon reduction of an oxide ore
(B) self-reduction of a sulphide ore
(C) removal of copper impurity
(D) removal of iron impurity
9. The correct statement(s) pertaining to the adsorption of a gas on a solid surface is (are)
(A) Adsorption is always exothermic.
(B) Physisorption may transform into chemisorptions at high temperature
(C) Physisorption increases with increasing temperature but chemisorptions decreases with increasing temperature.
(D) Chemisorption is more exothermic than physisorption, however it is very slow due to higher energy of activation.
10. According to kinetic theory of gases
(A) collisions are always elastic.
(B) heavier molecules transfer more momentum to the wall of the container.
(C) only a small number of molecules have very high velocity.
(D) between collisions, the molecules move in straight lines with constant velocities.
11. Amongst the given options, the compound (s) in which all the atoms are in one plane in all the possible conformations (if any), is (are)
(A) 
(B) 
(C) H2C=C=O
(D) H2C=C=CH2
Section-III
(Paragraph Type)
This section contains 2 paragraphs. Based upon one of the paragraphs 3 multiple choices questions and based on the other paragraph 2 multiple choices questions have to be answered. Each of these questions has four choices (A), (B), (C) and (D) out of which ONLY ONE is correct.
Paragraph for Questions Nos. 12 to 14
When a metal rod M is dipped into an aqueous colourless concentrated solution of compound N, the solution turns light blue. Addition of aqueous Nail to the blue solution gives a white precipitate O. Addition of aqueous NH3 dissolves O and gives an intense blue solution.
12. The metal rod M is
(A) Fe
(B) Cu
(C) Ni
(D) Co
13. The compound N is
(A) AgNO3
(B) Zn(NO3)2
(C) Al(NO3)3
(D) Pb(NO3)2
14. The final solution contains
(A) [Pb(NH3)4]2+ and [CoCl4]2−
(B) [Al(NH3)4]3+ and [Cu(NH3)4]2+
(C) [Ag(NH3)2]+ and [Cu(NH3)4]2+
(D) [Ag(NH3)2]+ and [Ni(NH3)6]2+
Paragraph for Question Nos. 15 and 16
An acyclic hydrocarbon P, having molecular formula C6H10, gave acetone as the only organic product through the following sequence of reactions, in which Q is an intermediate organic compound.
15. The structure of compound P is
(A) 
(B) 
(C) 
(D) 
16. The structure of the compound Q is
(A) 
(B) 
(C) 
(D) 
Section – IV
(Integer Answer Type)
This section contains 7 questions. The answer to each of the questions is a single-digit integer, ranging from 0 to 9. The bubble corresponding to the correct answer is to be darkened in the ORS.
17. The difference in the oxidation numbers of the two types of sulphur atoms in Na2S4O6 is
18. Reaction of Br2 with Na2CO3 in aqueous solution gives sodium bromide and sodium bromated with evolution of CO2 The number of sodium bromide molecules involved in the balanced chemical equation is
19. The maximum number of electrons that can have principal quantum number, n = 3, and spin quantum number, ms = −1/2, is
20. The work function (ϕ) of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls on the metal is
21. To an evacuated vessel with movalble piston under external pressure of 1 atm., 0.1 mol of He and 1.0 mol of an unknown compound (vapour pressure 0.68 atm. at 0℃) are introduced. Considering the ideal gas behavior, the volume (in litre) of the gases at 0℃ is close to
22. The total number of alkenes possible by dehydrobromination of 3-bromo-3-cyclopentylhexane using alcoholic KOH is
23. A decapeptide (Mol. Wt. 796) on complete hydrolysis gives glycine (Mol. Wt. 75), alanine and phenylalanine. Glycine contributes 47.0% to the total weight of the hydrolysed products. The number of glycine units present in the decapeptide is
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