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Chemistry

Chemistry
The substance that is added to make natural rubber strong and more bouncy is

Sponge
Chlorine
Polythene
Sulphur

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Chemistry
The gas produced in marshy places due to decomposition of vegetation is

Sulphur dioxide
Carbon dioxide
Methane
Carbon monoxide

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Chemistry
The alkaloid naturally found in coffee, cocoa and cola nut is

Morphine
Caffeine
Tannin
Cocaine

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Chemistry
Sodium Carbonate is commonly known as

Caustic Potash
Caustic Soda
Baking Soda
Washing Soda

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Chemistry
The most volatile of the given liquids is

Ether
Liquid He
Liquid
Liquid NH3

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Chemistry
The coating of a thin layer of zinc on steel or iron objects is known as

Galvanising
Tinning
Hot dipping
Electroplating

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