Question # 1

The deficiency of iodine in human body casue.

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Goiter

Cancer

Tuberculosis

Cholera

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

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10

25

35

45

An essential component of haemoglobin

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sodium

Neon

iron

Aluminium

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 percentage of nitrogen in air is

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76%

77%

78%

79%

The contents of sodium in leaf tissus vary from.

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0.01 - 10%

10-15%

12-16 %

It is not crystalline form of carbon

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charcoal

graphite

buckyballs

diamond

Which gas is slightly soluble in water.

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Neon

Carbon di oxide

Argon

Oxygen

The sun almost entirely consists to the element

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oxygen

iron

phosphorus

hydrogen

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

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carbon

nitrogen

hydrogen

oxygen

The process by which green plants manufacture their food is

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respiration

photosynthesis

oxidation

nitrogen fixation

What type of liquid has abnormal freezing and boiling point.

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Water

Juice

Petrol

Diesel

Ice floats on the surface of water due to.

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Higher density

Lower density

Normal density

Very High density

The form of carbon which is not crystalline is.

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Charcoal

Graphite

Bucky Ball

Diamond

If a key is stiff in a lock, rub the end of the key a soft pencil, which types of elements we obtain.

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Graphite

Silver

Gold

Paltinum

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