NEET Chemistry: Questions 556 - 560 of 677

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Question number: 556

» Chemical Kinetics » Activation Energy

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.

log102=Ea2.303R[1T11T2]

b.

log10(k1/k2)=Ea2.303R[1T21T1]

c.

log10(k1/k2)=Ea2.303R[1T11T2]

d.

log10(1/2)=Ea2.303R[1T11T2]

Question number: 557

» Chemical Kinetics » Rate of a Chemical Reaction

MCQ▾

Question

Rate expression of a chemical change is –dx/dt = k [A] 2 [B] [C] 0, the order of reaction is?

Choices

Choice (4) Response
a.

2

b.

1

c.

3

d.

0

Question number: 558

» Chemical Kinetics » Activation Energy

MCQ▾

Question

In a reaction, the threshold energy is equal to?

Choices

Choice (4) Response
a.

Average kinetic energy of molecules of reactants

b.

Activation energy + initial energy of reactants

c.

Initial energy of reactants

d.

Activation energy - normal energy of reactants

Question number: 559

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

MCQ▾

Question

Which of the following equation is represents first order reaction?

Choices

Choice (4) Response
a.

k=2.303tlog10(aax)

b.

k=2.303tlog10(axa)

c.

k=2.303tlog10(axa)

d.

k=2.303tlog10(aax)

Question number: 560

» Chemical Kinetics » Rate Constant and Its Units

MCQ▾

Question

What are the units of rate constant?

Choices

Choice (4) Response
a.

[litmol]n1×sec1

b.

[litmol]n×sec

c.

[litmol]n1×sec

d.

[litmol]n×sec1

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