Question # 1

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

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10

25

35

45

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 process by which green plants manufacture their food is

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respiration

photosynthesis

oxidation

nitrogen fixation

Which gas is slightly soluble in water.

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Neon

Carbon di oxide

Argon

Oxygen

The process which increases the temperature in the temperatureis called

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Photosynthesis

Oxidation

Greenhouse effect

Evaporation

It is not crystalline form of carbon

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charcoal

graphite

buckyballs

diamond

Ice floats on the surface of water due to.

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Higher density

Lower density

Normal density

Very High density

The contents of sodium in leaf tissus vary from.

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0.01 - 10%

10-15%

12-16 %

It is an important constituent of DNA and RNA our body

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Iron

Chlorine

Fluorine

Phosphorus

The form of carbon which is not crystalline is.

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Charcoal

Graphite

Bucky Ball

Diamond

The sun almost entirely consists to the element

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oxygen

iron

phosphorus

hydrogen

The percentage of Neon by volume is.

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0.002

0.9

0.02

0.00055

Iodine .......... 131 is used in treat the........................

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Cancer

Bone growth

Thyroid

Brain tumor

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

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Photosynthesis

Respiration

Burning

Evaporation

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

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Triatomic

Diatomic

Polyatomic

None of these

Which Gas is essential for proteins.

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Sulphur

Hydrogen

Nitrogen

Oxygen

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

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Carbon

Oxygen

Air

Hydrogen

The process which loops the amount of nitrogen constant in air is

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nitrogen fixation

nitrogen cycle

oxidation

photosynthesis

The process which increases the amount of carbon dioxide in air is called

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photosynthesis

respiration

oxidation

vaporization

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