Chemical Kinetics-Activation Energy (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry): Questions 1 - 5 of 7

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Question number: 1

» Chemical Kinetics » Activation Energy

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MCQ▾

Question

Activation energy of a reaction is?

Choices

Choice (4) Response

a.

Minimum amount of energy needed to overcome potential barrier

b.

The energy released during the reaction

c.

The energy needed to form one mole of product

d.

The energy evolved when activation complex is formed

Question number: 2

» 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: 3

» Chemical Kinetics » Activation Energy

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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: 4

» Chemical Kinetics » Activation Energy

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MCQ▾

Question

Which equation is true to calculate the energy of activation, if the rate of reaction is doubled by increasing temperature from T1 to T2 K?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 5

» Chemical Kinetics » Activation Energy

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MCQ▾

Question

In a reaction, the threshold energy is equal to?

Choices

Choice (4) Response

a.

Activation energy + initial energy of reactants

b.

Initial energy of reactants

c.

Activation energy - normal energy of reactants

d.

Average kinetic energy of molecules of reactants

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