Question # 1

The substance which decrease the activity of a catalyst is called.

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Promoter

Activator

Inhibitor

Positive catalyst

The bond order of N2 molecule is.

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1

2

3

4

Which particle have greater wave nature.

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Electron

Proton

Neutron

a particles

Azeotropic mixture

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Obey Raoult's law

Do not obey Raoult's law

Boils at low temperature only

Boils at high temperature only

In lead accumulator cathode is made up of.

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Pb

Pb coated with PbO2

PbSO4

Mixture of Pb and PbO2

Cadmium has isotopes.

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3

4

5

9

Which compound does not obey the octet rule.

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NH3

BCl3

H2O

CH4

The boiling point of water at Murree Hills.

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90^oC

98^oC

100^oC

120^oC

When 6d orbital is complete, the entering electron goes into.

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7f

7s

7p

7d

Weak intermolecular forces are present in.

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Only gases

Only liquid

Only solids

gases, liquids and solids

Chromatography in which stationary phase is a solid is called.

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Partition chromatography

Paper chromatography

High pressure liquid chromatography

Adsorption chromatography

Which of the following molecules has a co-ordinate covalent bond

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NH₄CI

NaCI

HCI

AICI₃

Which one of the following enthalpies is always an exothermic process.

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Enthalpy of atomization

Enthalpy of neutralization

Enthalpy of ionization

Enthalpy of dissociation

In order to mention the oiling point 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

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

In which of the following Paris, do the elements form a compound by sharing electrons.

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carbon and chlorine

Lithium and iodine

Neon and oxygen

Potassium ad bromine

A solution will be unsaturated if

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Ionic product = Kap

Ionic product < Ksp

Ionic Product > Ksp

both 'a' and 'b' are correct

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.

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