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IIT-JEE-Chemistry-Paper 2-2007

Paper II

______________________________________________________________________

8.     For the process H2O(l), (1 bar, 373 K) → H2O(g) (1 bar, 373 K), the correct set of thermodynamic parameters is

        (A)    DG = 0, DS = +ve

        (B)    DG = 0, DS = -ve

        (C)    DG = +ve, DS = 0

        (D)    DG = -ve, DS = +ve

 

9.     Consider a reaction aG + bH → Products. When concentration of both of the reactants G and H is doubled, the rate increases by eight times. However, when concentration of G is doubled keeping the concentration of H fixed, the rate is doubled. The overall order of the reaction is

        (A)    0

        (B)    1

        (C)    2

        (D)    3

 

10.    STATEMENT-1 : Alkali metals dissolve in liquid ammonia to give blue solutions.

        because

        STATEMENT-2: Alkali metals in liquid ammonia give solvates species of the type [M(NH3)n]+ (M = alkali metals).

(A)    Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for statement-1.

(B)    Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for statement-1.

(C)    Statement-1 is True, Statement-2 is False

(D)    Statement-1 is False, Statement-2 is True

 

11.    STATEMENT-1: Glucose gives a reddish-brown precipitate with Fehling's solution.

        Because

        STATEMENT-2: Reaction of glucose with Fehling's solution gives CuO and gluconic acid.

(A)    Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for statement-1.

(B)    Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for statement-1.

(C)    Statement-1 is True, Statement-2 is False

(D)    Statement-1 is False, Statement-2 is True

 

12.    STATEMENT-1: Molecules that are not superimposable on their mirror images are chiral.

        Because

        STATEMENT-2: All chiral molecules have chiral centers.

(A)    Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for statement-1.

(B)    Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for statement-1.

(C)    Statement-1 is True, Statement-2 is False

(D)    Statement-1 is False, Statement-2 is True

 

13.    STATEMENT-1: Band gap is germanium is small.

        Because

STATEMENT-2: The energy spread of each germanium atomic energy level is infinitesimally small.

(A)    Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for statement-1.

(B)    Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for statement-1.

(C)    Statement-1 is True, Statement-2 is False

(D)    Statement-1 is False, Statement-2 is True

 

14.    Among the following, identify the correct statement.

  &n(D)    Statement-1 is False, Statement-2 is True

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