Question # 1

When HCl and KOH is reacted the salt formed is.

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Acidic

Basic

Normal

Complex

Major portion of ozone layer is foun in.

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Troposphere

Stratosphere

Mesosphere

Thermosphere

The impurities associated with the minerals are known as:

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Metallurgy

Ores

Gangue

Compounds

Smell of rancid butter is due to the presence of.

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Propanoic acid

Butanoic acid

Acitic acid

Citric acid

Monosaccharide consists of number of carbon atoms.

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2 to 4

4 to 8

3 to 9

5 to 10

The % age of carbon is bituminous is

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60

70

80

90

When a system is at equilibrium states?

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The concentration of reactants and products becomes equal

The opposing reactions

The rate of the reverse reaction becomes very low

The rates of the forward and reverse reactions becomes equal.

When copper pyrite (CuFeS2) is strongly heated in excess of airit converted into mixture of:

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Cu2S + Cu2O

Cu2O +FeS

Cu2S + FeS

FeO + SO2 + Cu2S

General formula of alcohols is:

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RCHO

ROH

O= R - C -OH

O = R - C- R

A salt always

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Contain ions

Contains water of crystallization

Dissolves in water

Forms crystals which conduct electricity

Vital force theory was rejected by.

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Jabir Bin Hayan

Drawin

Wohler

Berzellius

Which are called paraffines?

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Alkyle

Alkynes

Alkenes

Alkanes

Alkynes are also called.

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Olefine

Ethene

Paraffins

Acetylenes

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