Chemical Process
White phosphorous is stored under water, because

It is poisonous
Its kindling temperature in dry air is very low
It is unstable
It does not react with water

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Chemical Process
Wax is a

Mixture of glycerides of fatty acids
Mixture of esters of polyhydric alcohols excepting glycerine
Liquid at room temperature
Mixture of glycerides

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Chemical Process
Unsaturated oils compared to saturated oils have

Lower melting point & higher reactivity to oxygen
Higher melting point & higher reactivity to oxygen
Higher melting point & lower reactivity to oxygen
Lower melting point & lower reactivity to oxygen

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