Question # 1

Global warming causes rising of the sea level. The cause of global warming is.

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CO₂ gas.

SO₂gas.

NO₂gases.

O₃gas.

A base is a substance which neutralizes an acid which of these substances is not a base?

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Aqueous ammonia

Sodium chloride

Sodium Hydroxide

Calcium Hydroxide

Which is the major effect of global warming?

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Increase in temperature.

Rise in sea level

Melting of glaciers

All of them

The branch of chemistry which deals with the study of hydrocarbons and their derivatives is known as.

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Organic chemistry

Inorganic chemistry

Biochemistry

Nuclear chemistry

Glucose and fructose are.

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Pentose

Triose

Hexoses

None of these

The earth atmosphere is getting hotter because of :

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SO₂

O₃

CO₂

CO

Hook warm larvae enter the body through.

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Food

Water

Skin

All of them

When a reaction ceases to proceed further , it is called.

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Chemical states

Static state

Physical state

Dynamic equilibrium state

Which one is not a characteristic of an acid:

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it turns red litmus blue

it reacts with base to form salt and water

Its aqueous solution conduct electric current

it has sour taste

How much amount of sunlight reaches up to earth and absorbed:

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26%

32%

50%

18%

The ability of carbon atom to form chain is called.

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Isomerism

Catenation

resonance

Condensation

When bones are heated they give.

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Starch

Gelatin

Fats

Oils

The percentage of water in human body is.

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40%

50%

60%

70%

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