Question # 1

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Small change in concentration of product

Small time internal

Co-efficient of the reactant

Co-efficient of the product

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

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Third order reaction

Second order reaction

First order reaction

Zero order reaction

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Measuring pH

Measuring density

Titration against standard NaOH

Titration against standard KMnO₄solution

Which statement about Arrhenius equation is incorrect

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Factor 'A' called Arrhenius constant depends upon collision frequency of reactants

Rate of reaction increase by increasing temperature

Rate constant k is increased

Activation energy Ea is decreased by rise in temperature

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Zero

253 sec

150 sec

500 sec

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

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Concentration of the reaction

Nature of the reactants

Molecularity of the reaction

Temperature

The rate of reaction between two specific time intervals is called

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Instantaneous rate

Average rate

Specific rate

Ordinary rate

Optical rotation method is sued when

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Reaction involve ions

Change of refractive indices

Reactions involving change of optical activity

None of the above

The unit of rate of reaction is

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mole dm^-3

mole Kg^-1

moles dm^-3sec^-1

grams dm^-3

The rate of reaction is denoted by

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dc/dp

dc/ac

dc/dT

dc/dt

Factor which slows down the rate of reaction is

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Small size of the particles of the reactant

High temperature of reaction

More concentration of reactant

Lowering the temperature

The unit of rate constant K ismole^-1 dm³for a chemical reaction, the order of reaction is :

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Order of reaction can determined by an experiment

Order of reaction can determined from a balance equation only.

Order of reaction can determined increases by increasing temperate.

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

In the hydrolysis of CH₃COOC₂H₅the acid produced is

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Inhibitor

Catalyst

Auto catalyst

None of above

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

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Order

Molecularity

Rate constant

Rate law

If the rate of reaction is independent of the concentration of the reactant, the reaction is of

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Zero order

First order

Second order

Third order

The unit of 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.

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Rate is independent of concentration of water since it is in excess

Rate is independent of concentration of ester since it is in exces

Rate depends upon the concentration of acid catalyst added

Rate = k[CH₃COOC₂H₅]^1/2[H₂O]^1/2

By the use of catalysis the energy of activation is

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Decreased

Increased

Not affected

None

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

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Rate constant.

Rate of reaction.

Rate equation.

Rate law.

Activation energy is the difference of energy between the energy of the reactant and

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The product

The activated complex

Both a and b

None of these

The number of atoms or molecules whose concentrations determine the rate of the reaction is called

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Molecularity

Order

Rate of reaction

Rate constant

Which of the following reactions occur at moderate rate :

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Rusting of iron

Chemical weathering of stone work of buildings by acidic gases in atmosphere.

Hydrolysis of an ester

Fermentation of sugars

The factor which effect the rate of reaction

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Nature of reactants

Surface area

Light

All of the above

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ECAT Chemistry Chapter 11 Reaction Kinetics Online Test MCQs With Answers

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