Physical Chemistry (CSIR Chemical Sciences): Questions 38 - 41 of 117

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Question number: 38

» Physical Chemistry » Chemical Kinetics » Determination of Reaction Mechanisms

Appeared in Year: 2012

MCQ▾

Question

Decomposition of NH3 on Mo surface follows Langmuir Hinshelwood mechanism. Decomposition was carried out at low pressure. Initial pressure of NH3 was 102 torr. The pressure of NH3 was reduced to 104 torr ion 10 mins. Rate constant of decomposition of NH3 is________ (December)

Choices

Choice (4) Response

a.

0.4606min1

b.

9.9×104torrmin1

c.

9.9×103torrmin1

d.

0.693min1

Question number: 39

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

Appeared in Year: 2014

MCQ▾

Question

Rate low for pyrolysis of CH3CHO at 520 and 0.2 bar is________

Rate=k2(k12k4)12[CH3CHO]32

Overall activation energy Ea in terms of rate low: - (June)

Choices

Choice (4) Response

a.

Ea(2)12Ea(1)+12Ea(4)

b.

Ea(2)Ea(1)+2Ea(4)

c.

Ea(2)+12Ea(1)Ea(4)

d.

Ea(2)+12Ea(1)12Ea(4)

Question number: 40

» Physical Chemistry » Chemical Kinetics » Enzyme Kinetics

Appeared in Year: 2013

MCQ▾

Question

Aggregation of surfactant molecular is (June)

Choices

Choice (4) Response

a.

Gel

b.

Miscelles

c.

Clusters

d.

Colloid

Question number: 41

» Physical Chemistry » Chemical Kinetics » Complex Reactions

Appeared in Year: 2015

MCQ▾

Question

For the following reaction:

Ak1k12B

Bk2C dBdt is given by: - (June)

Choices

Choice (4) Response

a.

2k1[A]2k1[B]12k2[B]

b.

2k1[A]2k1[B]2k2[B]

c.

k1[A]k1[B]22k2[B]

d.

12k1[A]12k1[B]2k2[B]

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