Question # 1

The number of carbon atoms present in gasoline or petrol.

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5-10

6-10

7-10

8-10

Carbon Tetra chloride is used in .

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Fertilizer

Dry cleaning

Metallurgy

Anesthesia

Conversion of dead plants into coal by the action of bacteria and heat is called.

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Carbonization

Catenation

Hydrogenation

Cracking

Which of the following statement s is not true about fossil fuels?

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they all contain carbon

They are renewable

they produce pollutants when burnt

they cause acid rain

Manufacturing of urea involves:

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2 steps

3 steps

4 steps

5 steps

When NaHCO₃ is heated it forms.

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CO₂

Ca(OH)₂

CaCO₃

CaO

Potassium Ferrocyanide is a:

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Normal salt

Mixed salt

Complex salt

Double salt

Which diseases cause by the deficiency of vitamin E?

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Rickets

Anemia in babies

Scurvy

Night blindness

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

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Specific heat capacity

Surface tension

Excellent solvent action

Capillary action.

____________ use for ripening of fruits.

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Ethene

Ethane

Ethyne

Propane

Which one of the mineral acid.

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HCl

H₂SO₄

HNO₃

All of these

Which one of the ore of copper?

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Copper glance

Chalcopyrite

Both a and b

None of these

When the numbers of moles of both sides are equal in a reaction, then the unit of K_c will be:

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No unit

mol^-2 dm⁶

mol dm³

mol^-2dm

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