NEET Chemistry: Questions 550 - 555 of 677

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Question number: 550

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

MCQ▾

Question

Half life of a first order reaction is 10 min. What percentage of reaction will be completed in 100 min?

Choices

Choice (4) Response

a.

80%

b.

75%

c.

99.9%

d.

25%

Question number: 551

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

MCQ▾

Question

A certain zero order reaction has k = 0.025 M s-1 for the disappearance of A. What will be the concentration of A after 15 seconds if the initial concentration is 0.5M?

Choices

Choice (4) Response

a.

0.12M

b.

0.32M

c.

0.5 M

d.

0.06M

Question number: 552

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

MCQ▾

Question

Which of the following reaction is first order reaction?

Choices

Choice (4) Response

a.

2NO+O22NO2

b.

NH4NO2N2+2H2O

c.

2HIH2+I2

d.

2NO22NO+O2

Question number: 553

» Chemical Kinetics » Arrhenius Theory

MCQ▾

Question

For a reaction Ea=0 and k = 3.2×104 sec-1 at 300K. The value of k at 310 K would be?

Choices

Choice (4) Response

a.

3.2×108 s-1

b.

3.2×105 s-1

c.

3.2×104 s-1

d.

6.4×104 s-1

Question number: 554

» Chemical Kinetics » Rate of a Chemical Reaction

MCQ▾

Question

The term dxdt in the rate of expression refers to the?

Choices

Choice (4) Response

a.

Increase in the concentration of reactants

b.

Instantaneous rate of reaction

c.

Concentration of reactants

d.

Average rate of reaction

Question number: 555

» Chemical Kinetics » Arrhenius Theory

MCQ▾

Question

According to Arrhenius equation, rate constant of a chemical reaction is equal to?

Choices

Choice (4) Response

a.

AeEa/RT

b.

AeEa/T

c.

AeEa/RT

d.

AeREa/T

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