Question # 1

Atmosphere has regions.

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One

Two

Three

Four

How many units are in Pakistan for manufacturing of Urea.

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3

6

9

12

In dry cleaning, which chemical is used.

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Chloroform

Carbon tetachloride

Ecetaldehyde

Ethanol

What is the pOH of Ca(OH)2, 0.02 M Solution.

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1.698

1.397

12.31

12.61

Red hair contains compound of.

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Iron

copper

titanium

Molybdenum

The general formula of carbohydrate is:

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C2n(H2O)

CN(H2O)n

Cn(H2O)2n

C2n(H2O)n

Out of twenty how many amino acids can by synthesized by human body?

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Five

Ten

Seven

Twelve

Ozone is formed in:

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Troposphere

Stratosphere

Mesosphere

Thermosphere

Which is present 85% in natural gas?

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Ethane

Propane

Methane

Butane

Global warming is because of.

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Absorption of infrared radiation emitted by earth surface.

Absorption of infrared radiation coming from sun.

Absorption of infrared Ultraviolet coming from the sun.

Emission of ultraviolet radiation from the earth's surface.

Cause of global warming is:

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CO₂gas

SO₂gas

NO₂gas

O₂gas

The ability of carbon atoms to form chains or ring called.

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Hydrogenation

Chlorination

Cantenation

Halogenation

Which one of the following species is not amphoteric?

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H₂O

NH₃

HCO₃

SO₄

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