Question # 1

Soda lime is a mixture of..

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CaCl, + KOH

NaOH + CaO

NaOH + CaCl₂

Ca(OH)₂ + CaO

When acid reacts with sulphites and Bi sulphates which gas is evolved?

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H2

CO₂

SO₂

NH₃

In the troposphere (lowest layer), the temperature decreases form 17°C to;

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-58°C

-93°C

-61°C

-49°C

Hook warm larvae enter the body through.

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Food

Water

Skin

All of them

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

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Lead metal

Chromium metal

Mercury metal

Aluminium metal

Which one of the following is used as jet fuel.

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Kerosene oil

Lubricating oil

Fuel oil

Diesel oil

Which one of the following is not a fossil fuel?

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Coal

Natural gas

Bio gas

Petroleum

Which type of reactions take place in both directions?

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Addition reactions

Reversible reactions

Irreversibel reactions

Decomposition reactions

Which disease cause liver inflammation?

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Typhoid

Jaundice

cholera

Hepatitis

Metallurgy involves which of the following steps?

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Mining and enrichment

Reduction

Refining and casting.

All of these

Glucose is:

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Hexabydroxy aldehyde

Hexahydroxy ketone

Polyhydroxy aldehyde

Pentahydroxy ketone.

Which hydrocarbon molecule would have no effect on the aqueous solution of bromine?

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CH₄

C₁₀H₂₀

C₂H₄

C₂H₂

Chalco-pyite is an ore of:

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iron

aluminium

silver

copper

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