Question # 1

Electrolysis is a process in which a chemical reaction takes place at the expense of

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Chemical energy

Electrical energy

Heat energy

None of these

If absolute temperature of gas is doubled and the pressure is reduced to one half, the volume of the gas will.

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Remain unchanged

Increase four times

Reduce to 1/4

Be doubled

The cathodic reaction in the electrolysis of dil H2SO4, with pt electrode sis.

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Reduction

Oxidation

Both oxidation and reduction

Neither oxidation nor reduction

Catalyst used in preparation of NH3 from N2 and H2 is.

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Ni

Fe

Pt

V2O5

In stoichiometric calculations

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The reaction can be reversile

Side products can be formed

Law of conservation of mass may not be obeyed

Law of definite proportions is definitely obeyed

The molal boiling point constant is the the ratio of the elevation in boiling point to.

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Molarity

Molality

Mole fraction of solvent

Mole fraction of solute

Which statement is correct about solubility product constant.

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It is applicable at highly soluble substances.

Value of Kap is independent of temperature

It is used for homogeneous aquarium system

It can be used to predict that precipitation will take place or not by combining two ions

The heat contents of the system of known as.

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Entropy

Enthalpy

Work

Free energy

Which compound does not obey the octet rule.

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NH3

BCl3

H2O

CH4

In which , case particles are separated from each other.

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Fusion

Condensation

Neutralizations

Vaporization

The pK_avalue of CH₃COOH is 4.74 when we mix CH₃COOH and CH₃COONa in the ratio of 10:1, tehn the pH of the buffer is

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4.74

5.74

3.74

7.00

Existence of an element in more than one crystalline form is known as.

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Anisotropy

Allotropy

Isomorphism

Unit cell

Sum of pKa and pKb is equal to.

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1

7

0

14

SP^3-hybridization in important in describing the bonding in

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When a non-spontaneous redox reaction is carried out by using the electrical current, then the process is called

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Decomposition of the substances

Cracking

Hydrolysis

Electroiysis

An orbital which is spherical and symmetrical is

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S-Orbital

P - Orbital

d- Orbital

f - Orbital

Chromatography involves the distribution of a solute between.

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Two stationary phases

Two mobile phases

A stationary phase and a mobile phase

Two stationary and two mobile phase.

Which one of the following has the same number of electrons as an alpha particle.

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H

He

H+

Li+

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