NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 537 - 543 of 1259

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Question number: 537

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

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MCQ▾

Question

Which of the following equation is true regarding zero order reaction?

Choices

Choice (4)Response

a.

b.

Either A or B

c.

d.

Question number: 538

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

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MCQ▾

Question

The half-life of first order reaction having rate constant k = 1.7×10-5 sec-1 is?

Choices

Choice (4)Response

a.

11.3 hrs

b.

9.7 hrs

c.

12.1 hrs

d.

1.8 hrs

Question number: 539

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

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MCQ▾

Question

The first order reaction has half life of 14.5 hrs. What percentage of the reactant will remain after 24 hrs?

Choices

Choice (4)Response

a.

18.3%

b.

68.2%

c.

45.5%

d.

31.8%

Question number: 540

» Chemical Kinetics » Rate Constant and Its Units

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MCQ▾

Question

Rate constant of a reaction is 175 litre-1mol-2sec-1. What is the order of the reaction?

Choices

Choice (4)Response

a.

2

b.

3

c.

1

d.

0

Question number: 541

» Chemical Kinetics » Rate of a Chemical Reaction

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MCQ▾

Question

The rate constant of the reaction , is 3×10-5 sec-1. If the rate is 2.4×10-5 mol. lit-1sec-1. Then the concentration of in mol lit-1 will be?

Choices

Choice (4)Response

a.

1.27

b.

1.2

c.

2.1

d.

0.8

Question number: 542

» Chemical Kinetics » Activation Energy

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MCQ▾

Question

The activation energy of a reaction can be lowered by?

Choices

Choice (4)Response

a.

Using a positive catalyst

b.

Increasing temperature

c.

Increasing reactants concentration

d.

Decreasing temperature

Question number: 543

» Chemical Kinetics » Collision Theory of Bimolecular Gaseous Reactions

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MCQ▾

Question

According to the collision theory?

Choices

Choice (4)Response

a.

All collisions are sufficiently violent

b.

All collisions are effective

c.

Only a fraction of collisions is effective which have enough energy to form products

d.

All collisions are responsible for product formation

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