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Chemistry

Chemistry
The element used in the manufacture of safety matches is

Sulphur
Phosphorous
Magnesium
Silicon

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Chemistry
The monomers of dacron are

Decanone and decanol
Decane and decanol
Ethylene glycol and terephthalic acid
Ethylene glygol and phthalic acid

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Chemistry
The oil used in the froth floatation process is

coconut oil
kerosene oil
olive oil
pine oil

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Chemistry
Diamond is lustrous because

It is hard
Its refractive index is high
It is colourless
It is pure

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Chemistry
The major harmful gas emitted by automobile vehicles which causes air pollution is

Carbon Monoxide
Ozone gas
Carbon dioxide
Methane

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Chemistry
The gas used in the artificial ripening of fruits is

Acetylene
Methane
Butane
Ethane

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MORE MCQ ON Chemistry

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