Chemical Process
Vulcanisation of rubber

Increases its oil & solvent resistance
Decreases its tensile strength
Increases its ozone & oxygen reactivity
Converts its plasticity into elasticity

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Chemical Process
Fusel oil is a/an

Essential oil
None of these
Mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses)
Extract from medicinal herbs

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Chemical Process
During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as

None of these
It decomposes on further increasing the temperature
Its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be further reduced)
It is very corrosive at elevated temperature

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