Question # 1

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

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Photosynthesis

Respiration

Burning

Evaporation

Bucky Ball is teh third form of pure.

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Carbon

Graphite

Magnesium

Diamond

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

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

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Cancer

Bone growth

Thyroid

Brain tumor

It is an organic compound

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natural gas

ammonium

water

sodium chlorides

The deficiency of iodine in human body casue.

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Goiter

Cancer

Tuberculosis

Cholera

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

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photosynthesis

respiration

oxidation

vaporization

Which Gas is essential for proteins.

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Sulphur

Hydrogen

Nitrogen

Oxygen

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

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10

25

35

45

The process which increases the temperature in the temperatureis called

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Photosynthesis

Oxidation

Greenhouse effect

Evaporation

The percentage of Neon by volume is.

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0.002

0.9

0.02

0.00055

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

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Triatomic

Diatomic

Polyatomic

None of these

The most common element in the universe is

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oxygen

hydrogen

nitrogen

iron

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 percentage of nitrogen in air is

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76%

77%

78%

79%

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General Science 9th Class English Medium Chapter 2 Online Test MCQs With Answers

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