CSIR Chemical Sciences: Questions 25 - 28 of 427

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Question number: 25

» Physical Chemistry » Chemical Kinetics » Complex Reactions

Appeared in Year: 2013

MCQ▾

Question

Concentration of a reactant undergoing decomposition was 0.1, 0.08 & 0.067 mol L -1 after 1.0, 2.0 and 3.0 hr respectively. Order of reaction is (December)

Choices

Choice (4) Response

a.

1

b.

3

c.

0

d.

2

Question number: 26

» Physical Chemistry » Chemical Kinetics » Enzyme Kinetics

Appeared in Year: 2014

MCQ▾

Question

In Lineweaver Burk plot of (initial rate) -1 vs Equation for an enzyme catalyzed reaction following Michaelis Menten mechanism, the Y-intercept is 5000 M-1 s, If initial enzyme concentration is Equation M, the turnover number is________ (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 27

» Physical Chemistry » Chemical Kinetics » Empirical Rate Laws and Temperature Dependence

Appeared in Year: 2012

MCQ▾

Question

A bacterial colony grows most commonly by call division. The change in population due to cell division in an actively growing colony is Equation The population of bacterial colony at time t [N0 = N (t = 0) ] (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 28

» Physical Chemistry » Chemical Kinetics » Determination of Reaction Mechanisms

Appeared in Year: 2013

MCQ▾

Question

First order gaseous reaction is 25 % complete in 30 min at 227 Equation and in 10 minutes at 237 Equation . Activation energy of reaction is closest to (R = 2 cal k-1mol-1) (December)

Choices

Choice (4) Response

a.

110 k cal/mol

b.

55 k cal/mol

c.

5.5 k cal/mol

d.

27 k cal/mol

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