Chemistry Fsc Part 1 Chapter 11 Online Test

A substance which itself is not a catalyst but increases the activity of a catalyst is called.

• Promoter A
• Poisoner B
• Inhibitor C
• Enzyme D

a zero order reaction is one is which

• Reactants do not react A
• One reactant is in large excess B
• Concentration of reactant do not change with passage of time C
• Rate is of affected by changing concentration of reactants D

Unit of rate constant is the same as that of the rate of reaction in

• Zero order reaction A
• 1st order reaction B
• 2nd order reaction C
• 3rd order reaction D

Half -Life for a given reaction is doubled if initial concentration is doubled. The order of reaction is.

• 0 A
• 1 B
• 2 C
• 3 D

The quantitative relationship between rate and concentration is given by.

• Law of mass action A
• Rate law B
• Both of these C
• Le Chatelier's principle D

All radio active disintegration nuclear reaction are of.

• First order A
• Zero order B
• 2nd order C
• Third order D

The rate of reaction

• Increase as the reaction proceeds A
• Decreases as the reaction proceeds B
• Remains the same as the reactions proceeds C
• May decrease or increase as the reaction proceeds D

The substance which decrease the activity of a catalyst is called.

• Promoter A
• Activator B
• Inhibitor C
• Positive catalyst D

• 1 A
• 2 B
• 3 C
• None of these D

Glucose can be converted into ethanol by an enzyme.

• Lipase A
• Zymase B
• Sucrose C
• Urease D

A substance which rerareds the rate of a reaction is called

• Inhibitor A
• Activator B
• Auto-catalyst C
• None of these D

Photosynthesis a photochemical reaction has order of reaction

• 0 A
• 1 B
• 2 C
• Fractional order D

The rate of reaction determined at any given time is called.

• Average rate A
• Instantaneous rate B
• Spontaneous rate C
• Over all rate D

In zero order reaction, the rate is independent of.

• Temperature of reaction A
• Concentration of reactants B
• concentration of products C
• None of these D

Dilatometer method is useful for the reactions that involve.

• Ionic species A
• Where reactant absorb U.V. visible or infrared radiations B
• Small volume changes in solutions C
• Change in refractive indices D

In zero order reaction the rate is independent of.

• Temperature of reaction A
• Concentration of reactants B
• Concentration of products C
• None of these D

When a chemical reaction is completed the

• Instantaneous rate > average rate A
• Instantaneous rate = average rate B
• Instantaneous rate is zero C
• Both average and instantaneous rates become zero D