NEET Chemistry: Questions 572 - 576 of 677

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Question number: 572

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

MCQ▾

Question

In the first order reaction, the concentration of the reactant is reduced to 25 % in one hour. The half-life period of the reaction is?

Choices

Choice (4) Response
a.

2 hrs

b.

4 hrs

c.

¼ hrs

d.

½ hrs

Question number: 573

» Chemical Kinetics » Rate of a Chemical Reaction

MCQ▾

Question

For the reaction A+Bproducts , rate is given as rate = k [A] [B] 2, how will the rate change if the volume of the reaction mixture is reduced to 13rd of its original volume?

Choices

Choice (4) Response
a.

Rate will increase 40 times

b.

Rate will increase 27 times

c.

Rate will decrease 27 times

d.

Rate will decrease 45 times

Question number: 574

» Chemical Kinetics » Activation Energy

MCQ▾

Question

The rate of reaction can be increased in general by all the following factors expect?

Choices

Choice (4) Response
a.

By increasing the concentration of reactants

b.

By increasing the temperature

c.

By increase in activation energy

d.

Using a suitable catalyst

Question number: 575

» Chemical Kinetics » Rate Constant and Its Units

MCQ▾

Question

Find out the order of reaction and rate constant of following reaction from the following observations 2X(g)3Y(g)+2Z(g)

Observation, time and pressure

Knowing the element of time and pressure

Observation number

Time in min

Pressure i mmHg

1

0

800

2

100

400

3

200

200

Choices

Choice (4) Response
a.

6.93×10-2

b.

0.069× 10 -3

c.

6.93× 10 -3

d.

0.693×10-3

Question number: 576

» Organic Compounds With Oxygen » Aldehyde and Ketones » Relative Reactivities of Aldehydes and Ketones

MCQ▾

Question

Formaldehyde can be distinguished from acetaldehyde by the use of?

Choices

Choice (4) Response
a.

Fehling’s solution

b.

Tollen’s reagent

c.

Schiff’s reagent

d.

Iodine in presence of a base

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