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Chemistry

Chemistry
Which variety of coal contains recognisable traces of the original plant material ?

Peat
Bitumen
Anthracite
Lignite

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Chemistry
Conversion of chemical energy into electrical energy occurs in

A battery
Atomic bombs
Electric heaters
Dynamo

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Chemistry
Hardness of the water is commonly measured in terms of

Magnesium carbonate equivalents
Calcium carbonate equivalents
Magnesium sulphate equivalents
Calcium sulphate equivalents

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Chemistry
A polymeric substance used to make parachute is

Terylene
Rayon
Cotton
Viscose

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Chemistry
Which of the following is used to make light weight, but strong plastic ?

Polythene
Polyvinyl Chloride
Methyl Methacrylate
Nylon

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Chemistry
Synthetic detergents are made from

Sodium palmitate
Sodium stearate
Sodium salt of benzene carboxylic acid
Sodium salt of benzene sulphonic acid

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