Question # 1

The voltage Nickel Cadmium cell is

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1 V

1.2 V

1.4 V

1.6 V

When an ionic compound is dissolved in water, it dissociate into positive and negative ions, which are surrounded byH2O molecule, This process is known as.

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Hydrolysis

Hydration

Saturation

solvolysis

During paper chromatography, the stationary phase is.

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Solid

Liquid

Gas

Plasma

Which one of the following orbital will be filled first.

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4f

5d

3d

4s

The largest number of molecules are present in

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3.6 of H2O

4.6 g of C2H5OH

2.8 g of CO

5.4 g of N2O5

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1

2

3

None of these

Chromatographic technique is very useful for

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Isolation

Purification

separation

All of them

Which one of the following expressions is for ideal gas equation.

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PM= nRT

PV = nRT

PV = dRT

PV= nTP

If reactants have very low activation energy it means that reaction is.

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Slow

Fast

Endothermic

Exothermic

Almost forward reaction is complete when value of Kc is

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very high

Very small

Neither large nor very small

No correlation

One mole of Carbon -12 has mass

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0.012 kg

1 kg

0.022 kg

12 kg

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

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

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Zero order reaction

1st order reaction

2nd order reaction

3rd order reaction

When an ionic compound is dissolved in water, it dissociate into positive and negative ions, which are surrounded by H2O molecule, This process is known as.

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Hydrolysis

Hydration

Saturation

solvolysis

A chemical change always involve

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Absorption of heat

Evolution of heat

Either absorption or evolution of heat

The liberation of heat and light energy

The influence of temperature on reaction rate is predicated by

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Free energy change of reaction

Arrhenius equation

Van der weal's equation

Kinetic equation

The best reducing agent is

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F^-1

CI^-1

Br^-1

I^-1

The unit of the rate constant is 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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