NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 570 - 574 of 1195

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Question number: 570

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

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Order can be determined experimentally

b.

Order cannot be fractional

c.

A and B are correct only

d.

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

Question number: 571

» Chemical Kinetics » Collision Theory of Bimolecular Gaseous Reactions

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.

Greater number of collisions

d.

Higher velocity of reacting molecules

Question number: 572

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

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

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 40 times

b.

Rate will increase 27 times

c.

Rate will decrease 27 times

d.

Rate will decrease 45 times

Question number: 574

» Chemical Kinetics » Activation Energy

MCQ▾

Question

The rate of reaction can be increased in general by all the following factors expect?

Choices

Choice (4) Response

a.

By increasing the concentration of reactants

b.

By increasing the temperature

c.

By increase in activation energy

d.

Using a suitable catalyst

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