Question # 1

Each day a normal man breathe............ litres of air.

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20,000 to 15,000

10,000 to 15,000

15,000 to 20,000

21,000, to 31,000

The compounds consisting of Amino acids are called

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carbohydrate

Fast

Proteins

organic compounds

Low iodine availability in humans causes the disease

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Goiter

Cancer

Tuberculosis

Cholera

The process which increases the temperature in the temperatureis called

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Photosynthesis

Oxidation

Greenhouse effect

Evaporation

Nitrogen occur in the atmosphere as................. molecules.

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Triatomic

Diatomic

Polyatomic

None of these

The contents of sodium in leaf tissus vary from.

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0.01 - 10%

10-15%

12-16 %

Coke is formed in the absence of..........

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Carbon

Oxygen

Air

Hydrogen

It is not crystalline form of carbon

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charcoal

graphite

buckyballs

diamond

It is an important constituent of DNA and RNA our body

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Iron

Chlorine

Fluorine

Phosphorus

Which Gas is essential for proteins.

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Sulphur

Hydrogen

Nitrogen

Oxygen

Which gas is slightly soluble in water.

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Neon

Carbon di oxide

Argon

Oxygen

The percentage of Neon by volume is.

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0.002

0.9

0.02

0.00055

One of the essential part of all living things on the earth

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carbon

nitrogen

hydrogen

oxygen

The amout of carbon dioxide int eh air is increased by.

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Photosynthesis

Respiration

Burning

Evaporation

The density of ice at o°C is & nbsp

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0.918g/cm3

0.618g/cm3

0.718g/cm3

0.8/8 g/cm3

The body of a young boy contains approximately... litres of water.

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10

25

35

45

Ice floats on the surface of water due to.

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Higher density

Lower density

Normal density

Very High density

It is an organic compound

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natural gas

ammonium

water

sodium chlorides

Bucky Ball is teh third form of pure.

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Carbon

Graphite

Magnesium

Diamond

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