Question # 1

Ionic compund are good conductors electricity in

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Solution

Molten state

Solid state

both a and b

The branch of chemistry that is concerned with the large scale production of chemical substances is.

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Environemantal chemistry

Inorganic chemistry

Physical Chemistry

Industrial chemistry

Period nuebr tells abou the

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No. of valance electrons

No. of electronic shells

Both a and b

None of the above

What is the mass of AI in 204 g of aluminium oxide Al₂O₃

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26 g

54 g

108 g

27 g

Which of the following grops contain alkaline earth metals.

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I A

II A

VII A

VIII A

Which branch of chemistry helps to protectwater that bas been poisoned by soil.

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Organic chemistry

inorganic chemistry

Environmenal chemistry

Geochemistry

Which acid is not used as a food or mixed with food?

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Tartaric Acid

Formic Acid

Ascorbic acid

Citric Acid

Acidic Acid is used for

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Cleaning metal

Etching designs

Flavouring food

Making explosives

²³⁸U₉₂ has number of neutrons.

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92

146

238

330

Caustic chemical drain cleaner are captable of dissolving.

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Hair

Food

Grease

All of these

Which is not produced in an aerobic respiration.

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Carbon dioxide

Lactic acid

Water

Energy

Graphite is ..........conductor of electiricity

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Bad

Moderate

Good

None of these

Metals can form ions carrying carges.

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Uni positive

Di positive

Tri postive

All of these

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