Question # 1

Monosaccharides consist of:

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2 to 6 carbon atoms

3 to 9 carbon atoms

4 to 10 carbon atoms

10 to 15 carbon atoms

Coal having 90% carbon contents is called.

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Peat

Lignite

anthracite

bituminous

The sphere just above the Earth's surface is.

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Mescosphere

Stratosphere

Thermosphere

Troposphere

Guldberg and waage put forward law of mass action in:

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1860

1869

1870

1879

The substance formed during the chemical reaction are called.

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Products

Reactants

Radical

Element

The pH of water containing CO₂ is

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4-6

5.6-6

6-7

7-8

Which disease is caused by polluted water.

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Cholera

Typhoid

Diarrhea

All of them

Global warming is because of.

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Absorption of infrared radiation emitted by earth surface.

Absorption of infrared radiation coming from sun.

Absorption of infrared Ultraviolet coming from the sun.

Emission of ultraviolet radiation from the earth's surface.

The number of carbon atoms present in kerosene oil.

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8-12

9-12

10-12

11-12

Dilute acid react with carbonates the produce product except _________

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Salt

Water

Carbon di oxide

Hydrogen gases

Maltose is commonly found in .

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Cereal

Milk

Cotton

Honey

The functional group -COOH is found in.

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Aldehydes

Esters

Carboxylic acids

alcohols

Which gas is responsible in warming the atmosphere?

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Nitrogen

Hydrogen

Helium

Fluorine

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