85.

86.

87.

88.

89.

90.

91.

92.

For a certain reaction, a plot of InfA] versus 1 gives a straight line with a slope of -1.46 87.
Then the order of the reaction in A is:
(A) 0 (8) 1

For a reaction A > B, the activation energy is E, = 125 KJ/mol and the heat of reaction,
AH = 50 KJ/mol. What is the E, for the reverse reaction in KJ/mol?

(A) 75 KJ/mol ൯ -75 KJ/mol

(C) 125 KJ/mol (D) 175 KJ/mol

The heat of adsorption in physical adsorption lies in the range :
(A) 1-10 KJ/mol (B) 10 - 400 KJ/mol
(C) 40 - 100 KJ/mol (0) 40 - 400 KJ/mol

0.5 Normal solution of a salt placed between two platinum electrodes, 20 cm apart and of
area of cross-section 4.0 sq.cm has a resistance of 25 ohms. Calculate the equivalent
conductance of the solution :

(A) 200 ohm cm? eqvt-! (B) 250 ohm-! cm? eqvt-!
(C) 400 ohm cm? eqvt-! (D) 500 ohm-! cm? eqvt-!

30% of 2൯ order reaction is completed in 15 minutes. Calculate the time for 60% completion :
(A) 60 minutes (B) 52.5 minutes
(C) 30 minutes (D) 32.5 minutes

A certain current liberated 1.008 ഉ of hydrogen in 2 hours. How many grams of copper can be
deposited by the same current flowing for the same time in CuSO, solution (atomic mass of

Cu = 68.5) :
(A) 31.75 ह (B) 6858
(0) 12708 (D) 15.875 8

The specific conductance of a 0.01 M solution of KCl] is 1.4 x 103 ohm-! അ at 298 K. Its
molar conductance is :

(^) 0.14 ohm~! cm? mol-! (B) 1.4 ohm" cm? mol!
(C) 14.0 ohm-! cm? mol-! (D) 140 ohm-! cm? mol!

The equivalent conductance at 18°C of a normal solution of KC] is 98.2 and for infinite
dilution at the same temperature is 131. Calculate the degree of dissociation of KC] at this
dilution :

(A) 0.1 (8) 0.2
(C) 0.5 (D) 0.75

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