Physical Chemistry-Chemical Kinetics (CSIR (Council of Scientific & Industrial Research) Chemical Sciences): Questions 26 - 29 of 41

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Question number: 26

» Physical Chemistry » Chemical Kinetics » Complex Reactions

Appeared in Year: 2013

MCQ▾

Question

In Lindeman mechanism of unimolecular reaction, observed order of low concentration is (June)

Choices

Choice (4) Response

a.

1

b.

2

c.

1.5

d.

0.5

Question number: 27

» Physical Chemistry » Chemical Kinetics » Steady State Approximation

Appeared in Year: 2013

MCQ▾

Question

[Equation ] D of a 90 % optically pure 2-aryl propanoic acid solution is + 135Equation . On treatment with a base at RT for one hour, [Equation ] D change toEquation . Optical purity is reduced to 40 % after 3hour. If so, the optical purity of solution after, 1 hour, and its [Equation ] D after 3 hour, respectively would be. (December)

Choices

Choice (4) Response

a.

20 % and 40%

b.

80 % and 90%

c.

80 % and 60%

d.

70 % and 60%

Question number: 28

» Physical Chemistry » Chemical Kinetics » Photochemical Reactions

Appeared in Year: 2015

MCQ▾

Question

First order rate constant for a animolecular gas phase reaction A Equation products, that follows Lindemann mechanism is 2.0 Equation of Equation = 1 atm and 4.0 Equation of Equation = 2 atm. The rate constant for activation step is: - (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

8.0 Equation

d.

Equation

Question number: 29

» Physical Chemistry » Chemical Kinetics » Collision and Transition State Theories of Rate Constants

Appeared in Year: 2013

MCQ▾

Question

In a chemical reaction, Equation total pressure at equilibrium is 6 atm. The value of equilibrium constant is (June)

Choices

Choice (4) Response

a.

36

b.

1

c.

9

d.

Equation

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