Question # 1

Spectrometry method is applicable if a reactant or a product absorbs radiation

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Ultraviolet

Visible

Infrared

Any of these

Consider gas is measure in bars then the units of rate of reaction is

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Mole dm-3 sec

Bars sec

Mole dm-3 sec-1

Bars sec-1

By increasing the concentration of reactants, the rate of reaction

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Decreases

Increases

Remains constant

Not predicted

The reaction takes place among the molecules when they have:

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Activation energy

Properly oriented

Concentrated

Activation energy and proper orientation

The conversion of molecules of A to B follows a second order kineties. Doubling the concentration of A will inerease the rate of formation of B by a factor of

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2

4

1/2

1/4

In the reaction A+B→ Products, if B is taken in excess, then it is an example of

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Second order reaction

zero order reaction

Pseudo first order reaction

first order reaction

The rate of reaction for a reaction is 30 mol dm-3sec-1 if the product of concentration of 10.reactant is unity the specific rate constant is

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25

2.5

30

15

When the concentration of product is increased the instantaneous rate of reaction with reference to reactants will be

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Positive

Negative

the same

falling curve

All the Hydrolytic reactions are

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First order

Second order

Third order

pseudo-first order

Which of the following statement about the order of reaction is true?

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The order of reaction can only be determined by experiment

a second order reaction is also bimolecular

The order of reaction is always non-zero

The order of reaction increases with increasing temperature

For reaction of methane and chlorine light is not available then

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Reaction will take place rapidly

No Reaction take place

Reaction occurs at double the rate

May all cases occur

The radioactive disintegration of 238U92 is

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First order

Second order

Third order

Zero order

Doubling the pressure in a liquid phase reaction

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Will double the rex

Will increase the rex

Will decrease the rex

Will not alter the concentration of reactant

The concentration of product is increasing from 30 mole/dm3 to 40mol/dm3 in 0.5 sec then rate of reaction will be------moledm-3sec-1

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0

20

15

25

The reaction kinetics concerned with the

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Rate of reaction

Direction of reaction

Factor effecting rate of reaction

both a &b

Substance which is formed as well as consumed during a chemical reaction and have temporary existence.

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Reactant

product

Catalyst

Intermediate

Half-lives required to convert 100% reactant to produet for a first order reaction are

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10

1000

100

Infinity

If the rate of the reaction is equal to the rate constant, the order of the reaction is

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3

1

0

2

If the reaction "P+Q→R+S' is deseribed as being of zero order with respect to P, it means that

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P is catalyst in this reaction

P molecules do not possess sufficient energy to react

The concentration of P does not change during the reaction

The rate of reaction is independent of the concentration of P

For a chemical reaction which can never be a fractional no

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order

molecularity

half-life

rate constant

Which of the following reactions are usually slow?

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Neutralization of acids and bases

Displacement Reactions

Organic substitution reaction

Free radical reactions

Amount of product formed increases with time, this statement is true for reactions-------with kinetics

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1s order

3rd order

zero order

Any order

Higher the surface area available for reaction

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slower the reaction

faster the reaction

constant the reaction

lower the Ea

When the concentration of reactants is taken as unity the rate of reaction is equal to

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average rate

concentratian of reactant

instantaneous rate

specific rate constant

The reaction which is zero order

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Decomposition ofN2O5

Formation of Glucose in plant

Formation of Fel2

Chorination of methane in sunlight

The number of atoms or molecules whose concentrations determines the rate of a chemical reaction is called the

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Molecularity of the reaction

specific activity of the reaction

Order of the reaction

rate constant of the reaction

Which property of liquid is measured by polarimeter

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Conductance

Optical activity

Refractiye Indéx

Change in volume

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