Question # 1

Hydrogen chloride molecule contains

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Covalent bond

Double bond

Co-ordinate bond

Electrovalent bond

The rate of a reaction can be increased in general by all the factors except by

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Using a catalyst

Increasing temperature

Increasing the activation energy

Increasing the conc. of reactants

The essential component of organic compound is

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O

C

P

N

Which one of the following elements occurs free in nature?

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N

P

As

Sb

Which of the following geometry is associated with the compound in which the central atom assumes sp³ d hybridization?

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Planar

Pyramidal

Angular

Trigonal bipyramidal

Octane number is zero for

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n-Heptane

Isooctane

n-Hexane

Isoheptane

The structure of XeF₆

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Distorted octahedral

Pyramidal

Tetrahedral

None of the above

The halide which is not hydrolysed is

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SiCI₄

SiF₄

CCI₄

PbCI₄

All the naturally occurring processes proceed spontaneously in a direction which lead to

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Decrease of entropy

Increase of enthalpy

Increase of free energy

Decrease of free energy

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