Question # 1

The sum of all kinds of energies of atoms, ions or molecules of a system is known as.

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Kinetic energy

Potential energy

Internal energy

Solar energy

Which of the following is true for ionic compounds

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They are non-electrolytes in the molten state

They have bonds which are directional

They conduct electricity in solid state

They are generally more soluble in polar solvents than in non-polar solvents

Many element have fractional atomic masses. This is because.

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the mass of the atom is itself fractional

Atomic masses are average mases of Isobars

Atomic masses are average masses Isotopes

Atomic masses are average masses of Isotopes proportional to their relative abundance.

The electrode reaction of a voltaic cell can be reversed when

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Concentrations of solutions are changed

Temperature is increased

Electrodes are interchanged

Electric circuit is employed to supply the source of electricity

The paramagnetic behaviour of oxygen is well explaned on the basis of.

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M.O Theory

N.B Theory

VSEPR Theory

CF theory

The molecules of CO₂in dry ice form the

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Ionic crystal

Covalent crystals

Molecular crystals

Any type of crystals

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

Molecular crystals are generally

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Hard

Relatively soft

Unstable

do not exist

In Al2O3, the ratio between the ions is

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1 :2

2:1

2:3

3:2

Stronger the oxidizing agent greater is the

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Oxidation potential

Reduction potential

Redox potential

E.M.F of cell

More ideal gas at room temperature is.

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CO2

NH3

SO2

N2

A limiting reactant is that one which

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Gives greatest number of moles of products

Gives least number of moles of products

Is left behind after the completion of reaction

Is mostly a cheaper substance as compared to other reactants

During combustion analysis, CO2 produced is absorbed in

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Mg (CLO4)2

50% KOH

CaCl2

P2O5

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Heat of reaction

Heat of sublimation

Heat of neutralization

Heat of combustion

Stronger the oxidizing agent, greater is the

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oxidation potential

Reduction potential

Redox potential

E.M.F of cell

In endothermic reactions, the heat content of the

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Products is more then that of reactants

Reactants is more than that of products

Both a and b

Reactant and products is equal

Which one of the following has highest pH

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Distilled water

1 M NH4OH

1 M NaOH

Water saturated with chlorine gas

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