Question # 1

When the reaction causes to produced it is called.

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Chemical equlibrium state

Static equilibrium

Dynamic equilibriiun

All

Benzene is formed by the polymerization of.

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Alkene

Alkane

Acetylene

Methane.

Which is a Lewis base?

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H⁺

NH₄

BF₃

AlCl₃

Stearic acid present in

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Apple

Fats

Urine

Grapes

The salts of which element are present in detergent that causes the rapid growth of algae in water bodies is.

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Phosphate

Calcium

Sodium

All of them

Which gas is used to prepare ammonia?

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N₂

O₂

Cl₂

S

A pollutant is a waste material that pollutes.

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Air

Water

Soil

All of them

Which one of the following disease causes severe diarrhea and can be fatal:

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Jaundic

Dysentery

Cholera

Typhoid

Concentration of copper are is carried out by process.

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Roasting

Forth floatation

Gravity sepration

Electrostatic separation

Chemical form of gypsum.

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MgSO₄. 5H₂O

CaSO₄. 2H₂O

FeSO₄. 5H₂O

CuSO₄. 5H₂O

A base is a substance which neutralizes and acid. Which of these substances is not a base?

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aqueous ammonia

Sodium chloride

Sodium carbonate

Calcium oxide

The region of ozone decomposition in stratosphere is.

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20 km

30 km

40 km

50 km

The percentage of water in human body is about:

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60%

50%

70%

80%

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