Question # 1

Amino acid are linked to each other through.

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Hydrogen link

Ionic link

Gelatin link

Peptide link

Methyl orange produces which colour in basic solution

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Red

Yellow

Pink

White

Chemical formula for urea is:

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NH4CNO

NH4CH

NH2CONH2

NH4CI

Manufacturing of urea involves:

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2 steps

3 steps

4 steps

5 steps

Which pollutant is not found in car exhaust gases?

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CO

O₃

NO₂

SO₃

What is the percentage of carbon in anthracite?

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60%

70%

80%

90%

Which contains sufficient amount of metal?

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Mineral

Ores

Rocks

Soil

The major components of Atmosphere are:

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Carbon and Nitrogen

Nitrogen and Oxygen

Oxygen and Chlorine

None of these

Carbon black is used in the manufacture of.

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Dry cleaning

Shoe polishes.

Fertilizer

None of these

Which acid is used for etching designs on copper plates?

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H₂SO₄

HNO₃

HCl

CH₃COOH

Hard water can cause.

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Stomach disorder

Boiler blasts

Inefficiency of engine

All of them

Ammonia is prepared by:

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Solvay's process

Haber's process

Floatation process

Bayer's process

Alkenes are produced in large amounts by cracking of.

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Natural gas

Petroleum

Benzene

xylol

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