Question # 1

The reaction that involves gases, its rate does not depend upon

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Catalyst

Temperature

Moles dm^-3

Partial pressure

When a chemical reaction is completed.

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Instantaneous rate > average rate

Instantaneous rate = average rate

Instantaneous rate is zero

Both average and instantaneous rates become zero

Chemical reactivity of different substance is controlled by

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Atomic number

Electronic arrangement

Mass number

Number of isotope of reactant elements

A type of meals are usually used as catalyst.

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Coinage metal

Alkali metals

Transition metals

alkaline earth metals

The unit of the rate constant is the same as that of the rate of reaction in

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First order reaction

Second order reaction

Zero order reaction

Third order reaction

Dilatometer method is useful for the reactions that involve.

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Ionic species

Where reactant absorb U.V. visible or infrared radiations

Small volume changes in solutions

Change in refractive indices

The unit of rate constant is same as that of rate of reaction in

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first order reaction

Second order reaction

Third order reaction

Zero order reaction

Which properties of liquid is measured by polarimeter

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Conductance

Refractive index

Optical activity

Change in volume

The rate of reaction

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Increases

Decreases

Remains the same

May decrease of increase

The unit of rate constant depends upon

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Number of reactants

Concentration terms

Order of reaction

Molecularity of reaction

Velocity constant is the rate of reaction when the concentrations of reactants are

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Zero

Unity

Two

Three

With increases of 10 oC temperature the rate of reaction doubles. This increase in rate of reactions is due to.

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Decrease in activation energy of reaction

Decrease in the number of collisions between reactant molecules

Increase in activation energy of reactants

Increase in number of effective collisions

When a chemical reaction is completed the

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Instantaneous rate > average rate

Instantaneous rate = average rate

Instantaneous rate is zero

Both average and instantaneous rates become zero

Photosynthesis a photochemical reaction has order of reaction

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0

1

2

Fractional order

The mathematical relation between the rate of reaction and the concentrations of the reactants is known as the

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Rate equation

Rate law

Arrhenius equation

Both a and b

After 3 half life of a chemical reaction, amount of reactant un reactive will be.

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50%

25%

12.5%

6.25%

Glucose can be converted into ethanol by an enzyme.

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Lipase

Zymase

Sucrose

Urease

Which technique is used ot determine the absorption of radiations.

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Spectrometry

dilatometer method

Refractometric method

Optical rotation method

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Chemistry Fsc Part 1 Chapter 11 Online Test MCQs With Answers

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