Question # 1

Bucky Ball is teh third form of pure.

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Carbon

Graphite

Magnesium

Diamond

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

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Triatomic

Diatomic

Polyatomic

None of these

What type of liquid has abnormal freezing and boiling point.

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Water

Juice

Petrol

Diesel

It is an organic compound

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natural gas

ammonium

water

sodium chlorides

Oxygen and nitrogen react to form.

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Nitric Acid

Nitrogen oxide

Nitrogen peroxide

Nitrate

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

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Cancer

Bone growth

Thyroid

Brain tumor

The process which increases the temperature in the temperatureis called

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Photosynthesis

Oxidation

Greenhouse effect

Evaporation

The contents of sodium in leaf tissus vary from.

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0.01 - 10%

10-15%

12-16 %

The form of carbon which is not crystalline is.

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Charcoal

Graphite

Bucky Ball

Diamond

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

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10

25

35

45

The process by which green plants manufacture their food is

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respiration

photosynthesis

oxidation

nitrogen fixation

Teh process of converting atompspheric nitrogen to useable from is called.

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Nitrogen cycle.

Carbon cycle

Nitrogen fixation

Water cycle

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

It is an important constituent of DNA and RNA our body

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Iron

Chlorine

Fluorine

Phosphorus

The most common element in the universe is

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oxygen

hydrogen

nitrogen

iron

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