Question # 1

Which one of the following reaction rate is effected by the light

Choose an answer

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

The example of a photo chemical reaction is photosynthesis has order of reaction :

Choose an answer

1

2

0

3

When the rate of reaction is entirely independent of the conc. of reaction molecules then order of reaction is

Choose an answer

Zero

First

Second

Third

Choose an answer

The rate of reaction determined at a given time is called

Choose an answer

Average rate

Instantaneous rate

Specific rate

Overall rate

Choose an answer

2

3

4

9

The rate of reaction is denoted by

Choose an answer

dc/dp

dc/ac

dc/dT

dc/dt

It is common observation that rates of chemical reactions differ :

Choose an answer

Greatly.

A little bit.

Moderately.

______ are called biocatalysts

Choose an answer

Organic acids

Organic bases

Enzymes

All

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

If the rate of decay of radioactive isotope decreases from 200 cpm to 25 cpm after 24 hours, what is its half life :

Choose an answer

8 hours

6 hours

4 hours

3 hours

Half life period of N₂O₅is 24 minutes and it remains same where we increase or decrease its initial concentration, then reactions

Choose an answer

Zero order

First order

Second order

Third order

If half life period of a reaction is independent of the concentration of the reactants, then the reaction is

Choose an answer

Zero order

First order

Second order

Order is in fraction

Rate law of an equation is obtained :

Choose an answer

From a balance equation.

Can be calculated theoretically as well as determined experimentally.

It is only calculated theoretically.

Experimentally.

Half life period of a reaction is inversely proportion to the initial concentration of the reactant, then order of reaction is

Choose an answer

Third order

Second order

Fist order

Zero order

If the rate equation of a reaction 2A+B-------->Products is , Rate = K[A] [B], and A is present in large excess, then order of reaction is :

Choose an answer

1

2

3

Above

The reaction rate is expressed in the units of

Choose an answer

Mol dm^-3S^-

Mol dm^-3

Mol dm^-3N^-

dm^-3S^-

The rate of reaction :

Choose an answer

Increase as the reaction proceeds.

Decreases as the reaction proceeds.

Remains the same as the reaction proceed.

May decrease or increase as the reaction proceeds.

Which statement is true about order of reaction :

Choose an answer

Order of reaction can only be determined by an experiment.

Order of reaction can be determined from a balance equation only.

Order of reaction increase by increasing temperature.

Order of reaction must be in whole number and not in fraction.

In zero order reaction, the rate is independent of :

Choose an answer

Temperature of reaction

Concentration ofreactants

Concentration of products

None of these.

A zero order reaction is one in which :

Choose an answer

Rate is not affected by changing concentration of reactants.

concentration of reactants do not change with the passage of time.

Reactants do not react.

One reactants in large excess.

The experimental relationship between a reaction rate and the concentration of reactants is called

Choose an answer

Order or reaction

Rate law

Activated complex

Molecularity

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

Homogenous catalysis is that in which catalyst and reactants are in same phase. Which one of the following reaction is a homogenous catalysis

Choose an answer

1st order

2nd order

Zero order

3rd order

Complex protein molecules which catalyses the organic reactions in the living cells are called

Choose an answer

Living organisms

Enzymes

Viruses

Bacteria

Which of the following is not affected by light

Choose an answer

Three times

Six times

Nine times

Two times

A substance which increases the rate of a reaction without being consumed during the reaction is called

Choose an answer

An autocatalyst

A catalyst

A negative catalyst

All of these

In the expression rate = K [A]^a[B]^bK is

Choose an answer

The order of reaction

The speed of reaction

The specific rate constant

The overall order of reaction

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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer