Question # 1

Which gas is emitted due to volcanic eruption?

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CO₂

SO₃

NO₂

H₂

Almost all aircrafts fly in:

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troposphere

mesosphere

stratosphere

themosphere

Water has a maximum density at .

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10^oC

0^oC

4^oC

100^oC

Brown hair contains.

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Iron compound

Copper compound

titanium compound

Both a and b

The general formula of carbohydrate is:

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C2n(H2O)

CN(H2O)n

Cn(H2O)2n

C2n(H2O)n

Soda time is a mixture of:

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CaO and NaOH

CaCI2 and NaOH

CaO and ca(OH)2

CaCI2 and KOH

Infrared radiation emitted by the earth are absorbed by?

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CO₂,H₂O

N₂,O₂

CO₂,N₂

O₂,CO₂

Which organ cause to function during Jaundice?

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Liver

Kindney

Stomach

Large intestine.

Normaily rain water is weakly acidic because.

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SO₃

CO₂

CO₃

NO₂

Almost all air crafts fly in which reion?

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Troposphere

Stratosphere

Mesosphere

Thermosphere

The end product of oxidation of acetylene is .

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Oxalic acid

Glyoxal

Glycol

None of these

Condensed formula of ethane is

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C₃Cl₈

C₂Cl₆

H₃CCH₃

None of these

Molecular formula of butane is

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C₄H₈

C₄H₁₀

C₄H₁₂

C₄H₆

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