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Chemistry

Chemistry
Hardest allotrope of carbon is

Graphite
Diamond
Coke
Lamp black

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Chemistry
Natural rubber is the polymer of :

Styrene
Ethylene
Butadiene
Isoprene

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Chemistry
The metal present in vitamin B12 is

Fe
Mg
Co
Mo

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Chemistry
Which of the following is used in welding broken pieces of iron rails and machine parts?

None of these
Solder
Aluminium powder
Aluminium sulphate

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Chemistry
The chief constituent of vinegar is

Acetic acid
Salycylic acid
Formic acid
Oxalic acid

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Chemistry
The gas used to extinguish fire is

Carbon monoxide
Nitrogen
Carbon dioxide
Neon

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MORE MCQ ON Chemistry

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