Question # 1

When glucose and fructose combine and forms.

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Starch

Cellulose

Sucrose

None of these

The acid which is called king of chemicals.

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Sulphuric Acid

Nitric Acid

Hydrochloric acid

Acetic acid

The % age of carbon is lignite is

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60

70

80

90

Which one of the following properties of water is responsible for rising of water in plants?

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Specific heat capacity

Viscosity

Excellent solvent action

Capillary action

Which salt cause permanent hardness in water is:

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Ca(HCO₃)₂

Mg(HCO₃)₂

CaCl₂

KCl

General formula of carbohydrate is.

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C_n(H₂O)₆

CH

C_nH_2n

C₆H_2nO

Which ion cause water hardness?

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Al²

Mg²

Fe²

Na²

How many times the heat capacity of water is greater than that of rocks.

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Two

Three

Four

Six

Number of discovered element till today are.

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140

118

90

16

Dilute acid react with carbonates the produce product except _________

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Salt

Water

Carbon di oxide

Hydrogen gases

The region in which ozone layere depletes is called.

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Ozone hole

Black hole

Both of them

None of them

Phenolphthalein produces red colour in

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Acid

Base

Both a and b

None of these

Who was prepared acetic acid in laboratory?

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Berzelius

Wohler

Kolbe

Dalton

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