Question # 1

When electricity is passed through molten AI₂O₃ + Na₃AIF₆ and 13.5 gms AI are deposited,the number of faraday must be

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0.5

1.0

1.5

2.0

The order of reactivity of halogens in aliphatic substitution reactions is

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Br2 > CI2 > F2

CI2 > Br2 > F2

CI2 CI2 > Br2

F2 > Br2 > CI2

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH₄ or LiAIH₄?

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1-Propanol

2-Propanol

2-Methyl-2-propanol

Ethanol

A chemical reaction A B is said to be in equilibrium when

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Complete conversion of A to B has taken place

Conversion of A to B is only 50% complete

Only 10% conversion of A to B has taken place

The rate of transformation of A to B is just equal to rate of transformation of B to A in the system

Which of the following mineral does not contain AI?

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Cryolite

Mica

Feldspar

Fluorspar

Saturated solution of NaCI on heating becomes

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Super saturated

Unsaturated

Remains saturated

None

Which one is primary alcohol?

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Buten-2-oI

Propan-2-oI

Butane-1-oI

2,3-Dimethylhexane-4-oI

The carbon atoms in calcium carbide are held by

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Ionic bonds

2 sigma bonds

2 covalent one co-ordinate bond

2 π and one σ bond

What quantity of limestone (CaCO₃) on heating will give 56 kg of CaO?

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1000 kg

56 kg

44 kg

100kg

An exothermic reaction is one in which the reacting substances

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Have more energy than the products

Have less energy than the products

Have the same energy as the products

Are at a higher temperature than the products

The percentage of oxygen in NaOH is

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40

60

8

10

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