Ms95

PAPER-1

PART I: Chemistry SECTION -I (Total Marks : 21)

(Single Correct Answer Type)

This section contains 7 multiple choice questions. Each question has four choices (A), (B), (C) and (D) out of which ONLY ONE is correct. Q.1 Among the following compounds, the most acidic is (A) p-nitrophenol (B) p-hydroxybenzoic acid (C) o-hydroxybenzoic acid (D) p-toluic acid [Ans. C] Q.2 The major product of the following reaction is

(A)

(B)

(C)

(D)

[Ans. A] Q.3 Extra pure N2 can be obtained by heating (A) NH3 with CuO (B) NH4NO3 [Ans. D] Q.4

(C) (NH4)2Cr2O7

(D) Ba(N3)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 tetrahedral [Ans. B]

[1]

Q.5

Bombardment of aluminium by -particle leads to its artificial disintegration in two way (i) and (ii) as shown. Products X, Y and Z respectively are,

(A) proton, neutron, positron (C) proton, positron, neutron [Ans. A] Q.6

(B) neutron, positron, proton (D) positron, proton, neutron

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 [Ans. C] Q.7 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) [Ans. D]

(B) (Q)

(C) (R)

(D) (S)

[2]

SECTION -II (Total Marks : 16) (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. Q.8 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...