NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 558 - 563 of 1258

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Question number: 558

» Chemical Kinetics » Activation Energy

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MCQ▾

Question

In a reaction, the threshold energy is equal to?

Choices

Choice (4) Response

a.

Activation energy + initial energy of reactants

b.

Initial energy of reactants

c.

Activation energy - normal energy of reactants

d.

Average kinetic energy of molecules of reactants

Question number: 559

» Chemical Kinetics » Differential and Integral Forms of Zero and First Order Reactions

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MCQ▾

Question

Which of the following equation is represents first order reaction?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 560

» Chemical Kinetics » Rate Constant and Its Units

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MCQ▾

Question

What are the units of rate constant?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 561

» Chemical Kinetics » Differential and Integral Forms of Zero and First Order Reactions

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MCQ▾

Question

If a first order reaction takes 32 minutes for 75 % completion, then time required for 50 % completion is?

Choices

Choice (4) Response

a.

32 min

b.

4 min

c.

16 min

d.

8 min

Question number: 562

» Chemical Kinetics » Rate of a Chemical Reaction

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MCQ▾

Question

The rate of a gaseous reaction is given by the expression k [A] 2 [B] 3. The volume of the reaction vessel is suddenly reduced to one half of the initial volume. The reaction rate relative to the original rate will be?

Choices

Choice (4) Response

a.

1/32

b.

1/24

c.

32

d.

24

Question number: 563

» Chemical Kinetics » Rate of a Chemical Reaction

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MCQ▾

Question

For the reaction , the rate is expressed as?

Choices

Choice (4) Response

a.

b.

c.

d.