Question # 1

Which acid is used an electrolyte in lead storage battery?

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H₂SO₄

HNO₃

HCl

CH₃COOH

The percentage of sun light absorbed by atmospheric gases is.

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2%

10%

18%

25%

When NaHCO₃ is heated it forms.

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CO₂

Ca(OH)₂

CaCO₃

CaO

Ethylene glycol can be prepared with the reaction of KMnO₄ and _____

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CH = CH

CH₃ - CH₃

CH₃CH₂CH₃

CH₂= CH₃

Which base is more corrosive?

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NH₄OH

NaOH

Ca(OH)₂

AL(OH)₂

Main component of natural gas is

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Methane

Propane

Butane

Propene

Acid rain affects the aquatic life by clogging fish gills because of:

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Lead metal

Chromium metal

Mercury metal

Aluminium metal

Red hair contains compound of.

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Iron

copper

titanium

Molybdenum

What is the percentage of carbon in anthracite?

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60%

70%

80%

90%

A salt always

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Contain ions

Contains water of crystallization

Dissolves in water

Forms crystals which conduct electricity

The recombination of O and O₂ in mid stratosphere is an

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Exothermic reaction

Endothermic reaction

Heat absorbing process

None of these

Alkynes are also called.

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Olefine

Ethene

Paraffins

Acetylenes

_______ is the king of chemicals.

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Hydrochloric acid

Nitric Acid

Sulphuric acid

Phosphoric acid

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