Question # 1

The difference of potential of two electrodes when concentration of solution is 1 M each at 25^oC and 1 atmosphere is called.

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Electrode potential

Standard cell potential

Cell reaction

Cell voltage

Acetone and chloroform are soluble in each other due to.

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Intermolecular hydrogen bonding

Dipole dipole interaction

Instantaneous dipoles

All of the above

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

Dipole moment of CO2 is.

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1.25 D

1.85 D

3.1 D

Zero

Polymorphic substances have

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Same physical and chemical properties

Different physical and chemical properties.

Same physical but different chemical properties

Different physical and same chemical properties.

The boiling point of glycerin at one atm is.

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280 ^oC

290 ^oC

100 ^oC

110 ^oC

In order to mention the B.P of water at 110 ^oC the external pressure should be.

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Between 760 torr and 1200 torr

Between 200 torr and 760 torr

765 torr

Any value of pressure

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The law of mass action was given by

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D.C. down and P wage

Gay Lussic and C.M

C.M Goldberg and P. Waage

Hendeson and Le Chateller's

Upper consulate temperature for water phenol system is.

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150 ^oC

65.9 ^oC

120 ^oC

130 ^oC

The highest temperature above which a gas cannot be liquified, no matter how much the pressure is applied is known as

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Boiling temperature

Consulate temperature

Absolute zero

Critical temperature

Keeping the temperature constant of the gas is expanded.

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Pressure will decrease

Temperature will increase

Kinetic energy of molecules will increase

No. of gas molecules increases

The enthalpy of combustion is

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Positive

Negative

Either positive or negative

No correlation

Molal boiling point elevation depends upon

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Nature of solvent

Natrue of solute

Vapour pressure of solution

None of these

Born Haber cycle is used to determine the

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Lattice energy

Enthalpy of formation

Enthalpy of ionization

Enthalpy of dissociation

In zero order reaction, the rate is independent of

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Temperature of reaction

Concentration of reactants

Concentration of products

None of these

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

The voltage Nickel Cadmium cell is

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1 V

1.2 V

1.4 V

1.6 V

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