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Chemistry

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

Polythene
Sponge
Chlorine
Sulphur

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Chemistry
Silica gel is a

Flavouring agent
Moisturizer
Delicious food
Drying agent

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Chemistry
The most abundant element by number in the living system is :

Nitrogen
Carbon
Oxygen
Hydrogen

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Chemistry
The gas used to extinguish fire is

Nitrogen
Carbon dioxide
Neon
Carbon monoxide

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Chemistry
Aspirin is chemically known as

Methyl salicylate
Hydroxysalicylate
Alkylsalicylic acid
Acetylsalicylic acid

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Chemistry
Food cans are coated with tin and not with zinc because

Zinc is less reactive than tin
Zinc is costlier than tin
Zinc has a higher melting point than tin
Zinc is more reactive than tin

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