Correct Answer:- Option-C

Question94:-The surface tension of dilute solution of a solute varies linearly with the
solute concentration ௦ 9857-1௯ , where % is the surface tension of the solvent and «
is a constant. The expression for surface excess is

7-)۔-ھ

B:-(10-7)/RT

(:-(27-%)/रि

0:-7०77)/2#शा

Correct Answer:- Option-B

Question95:-In the acid hydrolysis reaction, 4+#,0+4*— Products, where, [#+]=02 mol
dm-s and 2.0 is present in large excess, the pseudo first order rate constant is
1.0>10-39-1 . The true rate constant will be

At-3.5x10-8 dm8 mol-2 s-1

B:-9x10-7 dm® mol-? st

ട്‌ ങ്‌ അലാ ടി

D:-10x10-6 dm mot? s-1

Correct Answer:- Option-B

Question96:-In the base catalysed hydrolysis of ethyl acetate, a plot of logarithm of
rate constant versus square root of ionic strength of the solution will be

A:-linear and parallel to x axis
B:-linear with positive slope
C:-linear with negative slope
D:-None of the above
Correct Answer:- Option-A
Question97:-Which of the following statements is not true for a catalyst?
A:-lt catalyses the forwards and backward reactions to the same extent
B:-It does not change the equilibrium constant of a reaction
C:-It alters AG of the reaction
D:-It reduces activation energy
Correct Answer:- Option-C

Question98:-The volume of nitrogen gas at 1 atm. and 273 K required to cover the
surface of an adsorbent as monolayer is 0.1 am3/9 of the adsorbent. If each nitrogen
molecule occupies 10x10-2m2 , the surface area of the adsorbent is

A:-210 m2
B:-536 ‏تم‎
‎C:-324 m2
D:-268 m2

Correct Answer:- Option-D