NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 541 - 546 of 1258

Access detailed explanations (illustrated with images and videos) to 1258 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.

Rs. 500.00 or

How to register?

Question number: 541

» Chemical Kinetics » Rate of a Chemical Reaction

Edit
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

Edit
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

Edit
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

Question number: 544

» Chemical Kinetics » Rate Law

Edit
MCQ▾

Question

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

Choices

Choice (4) Response

a.

One

b.

Two

c.

Zero

d.

Three

Question number: 545

» Chemical Kinetics » Activation Energy

Edit
MCQ▾

Question

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

Choices

Choice (4) Response

a.

72 kcal

b.

48 kcal

c.

92 kcal

d.

22 kcal

Question number: 546

» Chemical Kinetics » Rate of a Chemical Reaction

Edit
MCQ▾

Question

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

Choices

Choice (4) Response

a.

½

b.

1/4

c.

2

d.

13/12