Question # 1

Which one is heterocyclic compound?

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Benzene

Cyclobutane

Thiophene

Nephthalene

Chemical formula for urea is:

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NH4CNO

NH4CH

NH2CONH2

NH4CI

Coal is the mixture of

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Hydrogen

Methane

Carbon monoxide

All

Building and Monuments lose their beauty and shine due to

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U.V radiations

Chlorofluoro carbons

Acid rain

IR radiations.

Coal tar contains compounds

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Benzene

Phenol

Toluene

All

Oils and fats are esters of large chain fatty acids with.

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Glycogen

Glucose

Starch

Glycerol

The reaction will attain the equilibrium if:

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Qc<Kc

Qc > Kc

Qc = Kc

Qc = 0

The nitrogen present in urea is used by plants to synthesize.

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Sugar

Proteins

Fats

DNA

Ozone id beneficial for us as it:

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absorbs infrared radiations

absorbs ultraviolet radiation

absorbs chlorofluorocarbons

absorbs air pollutants

The forward reaction takes place:

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Right to left

Left to Right

Only to right

Only to left

There are ____________ types of salts.

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2

3

6

8

Temporary hardness in water can he removed by.

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Boiling Method

Using washing soda

Using sodium zeolite

All of them

Acetic acid is used for:

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Elching designs

Clearing metals

Flavouring food

Making explosives

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