Question # 1

Which process is responsible for ascending of water in roots:

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evaporation

transpiration

condensation

capillary action

Which compound do not produce in the halogenation of methane.

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Chloroform

Carbon tetrachloride

Carbon black

Chloromethane

The process of removing temporary hardness of water.

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Clark's method

Washing soda method

Sodium zeolite

Filteration method

Which gas creates suffocation and causes death?

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CO

CO₂

SO₃

SO₂

The percentage by volume of nitrogen in dry gas is.

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78.09%

20.94%

0.93%

0.03%

Ammonical brine is prepared by dissolving ammonia gas in.

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NaCl

CaCO₃

CaCl₂

Na₂SO₄

What percentage of nitrogen and oxygen is in the atmosphere.

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69%

79%

9%

89%

Salt makes the water permanently hard.

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CaSO₄

Ca(HCO₃)₂

NaHCO₃

NaCO₃

Formula of Methyl alcohol

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CH₅-OH

CH₃-CH₂-OH

All of them

None of these

Potassium Ferrocyanide is a:

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Normal salt

Mixed salt

Complex salt

Double salt

Which of the following salt is soluble in water.

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NaCl

KCl

Na₂SO₄

All of them

In hydrogenation of vegetable oil catalyst employed is.

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Ni

Pt

ZnO

Cr₂O₃

Ozone is an allotropic form of

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Carbon

Oxygen

Sulphur

Phosphorous

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