NEET (National Eligibility cum Medical Entrance Test) Chemistry: Questions 541 - 546 of 1145

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Question number: 541

» Chemical Kinetics » Rate of a Chemical Reaction

MCQ▾

Question

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

Choices

Choice (4) Response

a.

0.8

b.

1.2

c.

1.27

d.

2.1

Question number: 542

» Chemical Kinetics » Activation Energy

MCQ▾

Question

The activation energy of a reaction can be lowered by?

Choices

Choice (4) Response

a.

Decreasing temperature

b.

Using a positive catalyst

c.

Increasing reactants concentration

d.

Increasing temperature

Question number: 543

» Chemical Kinetics » Collision Theory of Bimolecular Gaseous Reactions

MCQ▾

Question

According to the collision theory?

Choices

Choice (4) Response

a.

All collisions are effective

b.

All collisions are responsible for product formation

c.

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

d.

All collisions are sufficiently violent

Question number: 544

» Chemical Kinetics » Rate Law

MCQ▾

Question

For a single step reaction, A + 2B→ 2AB, the molecularity is?

Choices

Choice (4) Response

a.

One

b.

Three

c.

Zero

d.

Two

Question number: 545

» Chemical Kinetics » Activation Energy

MCQ▾

Question

For Equation for the reaction is 70 kcal. Hence, the activation energy for Equation is?

Choices

Choice (4) Response

a.

72 kcal

b.

22 kcal

c.

92 kcal

d.

48 kcal

Question number: 546

» Chemical Kinetics » Rate of a Chemical Reaction

MCQ▾

Question

The rate of the reaction, Equation , is given by Equation , the order of this reaction is?

Choices

Choice (4) Response

a.

13/12

b.

½

c.

2

d.

1/4

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