Question # 1

It is common observation that rates of chemical reactions differ :

Choose an answer

Greatly.

A little bit.

Moderately.

The actual number of atoms or molecules taking part in rate determining step is

Choose an answer

Rate of reaction

Velocity of reaction

Order of reaction

Molecularly

Rate of chemical reaction depends upon :

Choose an answer

The number of total collisions per second.

Number of molecules taking part in a chemical reaction.

Number of fruitful collisions per second

Number of fruitless collisions per second.

The unit rate of constan K ismole^-1 dm³S^-1for a chemical reaction, the order of reaction is :

Choose an answer

3

2

1

0

Choose an answer

Diastase

Lipase

Inverters

Zymase

The rate of reaction determined at a given time is called

Choose an answer

Average rate

Instantaneous rate

Specific rate

Overall rate

With increases in temperature of 10 K of the reacting gases the rate of reaction is doubled because

Choose an answer

Increase in number of collisions

Number of molecules having energy more than Ea is doubled

Increase in order of reaction

Increase in surface area

The change in concentration of reactant or product per unit time is called :

Choose an answer

Rate constant.

Rate of reaction.

Rate equation.

Rate law.

The reaction rate is expressed in the units of

Choose an answer

mol dm^-3S^-

mol dm^-3

mol dm^-3N^-

dm^-3S^-

Choose an answer

First order

Pseudo first order

Second order

Zero order

Choose an answer

Zero

253 sec

150 sec

500 sec

Which of the following factors does not influenced the rate of reaction

Choose an answer

Concentration of the reaction

Nature of the reactants

Molecularity of the reaction

Temperature

Choose an answer

The rate equation for a reaction is Rate =k[A]. what are unit of K ?

Choose an answer

Mole-1 dm³ S^-1

Mole dm³ S^-1

Moledm³

S^-1

In the hydrolysis of CH₃COOC₂H₅the acid produced is

Choose an answer

Inhibitor

Catalyst

Auto catalyst

None of above

The reaction rate is expressed in the units of

Choose an answer

Mol dm^-3S^-

Mol dm^-3

Mol dm^-3N^-

dm^-3S^-

A catalyst is a substance which increase the rate of a chemical reaction, but remains unchanged at the end of reaction, nut remains unchanged at the end of reaction, because

Choose an answer

It increases the temperature

It increase the surface area

It increases the rate constant

It decrease the energy energy of activation

A white precipitate ofsilver chlorideimmediately formed on additionof :

Choose an answer

Silver nitrate solution to sodium chloride solution.

Silver chloride solution to sodium nitrate solution.

Silver nitrate solution to potassium chloride solution

Silver nitrate solution to hydrogen chloride solution.

The rate determining step is the :

Choose an answer

Slowest step.

Fastest step.

Moderate step.

Both (a) and (b).

In thermal decomposition of N₂O the half life period for two different initial concentrations of N₂O are

(i) 255 second for initial N₂O 290 mm Hg

(ii) 212 second for initial N₂O 360 mm Hg then it is

Choose an answer

Zero order

First order

Second order

Third order

Dilatometer method is useful for the reaction that involve :

Choose an answer

Small volume changes in solutions

Change in infractive indices

Where reactants absorb U.V, visible or infrared radiation

The rate of reaction between two specific time intervals is called

Choose an answer

Instantaneous rate

Average rate

Specific rate

Ordinary rate

In the hydrolysis of CH₃COOC₂H₅the acid produced is

Choose an answer

Inhibitor

Catalyst

Auto catalyst

None of above

More Classes

Other Links

ECAT Chemistry Chapter 11 Reaction Kinetics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer