78.

79.

80.

81.

82.

83.

84.

155/23

Calculate the entropy increase in the evaporation of 1 mol of water at 100°C. Heat
of vaporisation of water at 100°C is 2000 J gt.

A) 96.5 JK"! mor B) 414.4 JK"! mort
@) 5.4 ५।<1 7011 2) 3.4 1൦ നം

A spontaneous reaction is not possible if
A) AH and TAS are both negative B) AH and TAS are both positive
C) AH is positive and TAS is negative D) AH is negative and TAS is positive

For a reaction A > products, a graph of [A] versus time is found to be a straight
line. Then the order of the reaction is

A) first order B) second order C) third order D) zero order

According to collision theory, successful collision between reactant molecule must
fulfil which of the following conditions ?

A) the collision must be elastic

B) the collision must have high energy

C) the collision must occur at high pressure
)

D) collision must have proper orientation and sufficient energy

The movement of the dispersion medium under the influence of applied potential
is known as

A) Electro osmosis 8B) Electrophoresis C) Peptization D) Diffusion

The effectiveness of POS, Cl and 50 ions for precipitating a positive sol
decreases in the order

A) PO} >Cl > Soy B) Cl >SO; < ‏0م‎

௦) ೧7೦೭-58೦೫ ೦೯ 0) 5೦0೫ ‏۰۰م‎ <٠

Standard solution of KCI is used in salt bridge in a galvanic cell because
A) KCl forms good jelly with agar-agar

B) transference number of K* is greater டெ

C) transference number of CI is greater than K*
)

D) transference number of K* and CI” are nearly same

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