NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 569 - 573 of 1258

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Question number: 569

» Chemical Kinetics » Rate of a Chemical Reaction

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MCQ▾

Question

The rate of a chemical reaction

Choices

Choice (4) Response

a.

Increases as the reaction proceeds

b.

Remains constant

c.

May increase or decrease during the reaction

d.

Decreases as the reaction proceeds

Question number: 570

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

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MCQ▾

Question

Which of the following statement is not correct regarding the order of reaction?

Choices

Choice (4) Response

a.

A and B are correct only

b.

Order can be determined experimentally

c.

Order cannot be fractional

d.

Order is equal to sum of powers of concentration terms of reactants

Question number: 571

» Chemical Kinetics » Collision Theory of Bimolecular Gaseous Reactions

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MCQ▾

Question

According to the collision theory of reaction rates, the rate of reaction increased with temperature due to?

Choices

Choice (4) Response

a.

Decrease in the activation energy.

b.

Greater number of molecules having the activation energy

c.

Higher velocity of reacting molecules

d.

Greater number of collisions

Question number: 572

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

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MCQ▾

Question

In the first order reaction, the concentration of the reactant is reduced to 25 % in one hour. The half-life period of the reaction is?

Choices

Choice (4) Response

a.

2 hrs

b.

4 hrs

c.

¼ hrs

d.

½ hrs

Question number: 573

» Chemical Kinetics » Rate of a Chemical Reaction

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MCQ▾

Question

For the reaction , rate is given as rate = k [A] [B] 2, how will the rate change if the volume of the reaction mixture is reduced to of its original volume?

Choices

Choice (4) Response

a.

Rate will increase 27 times

b.

Rate will decrease 45 times

c.

Rate will decrease 27 times

d.

Rate will increase 40 times