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Chemistry

Chemistry
The weight of 6.023 × 1022 atoms of carbon is

1.2 gms
0.12 gms
120 gms
12 gms

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Chemistry
The element which is used for vulcanizing rubber

Sulphur
Silicon
Bromine
Phosphorus

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Chemistry
Carborundum is another name of

Calcium carbide
Silicon carbide
Silicon oxide
Calcium oxide

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Chemistry
The first metal used by a man was

Silver
Copper
Bronze
Brass

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Chemistry
Nylon threads are made of

Polyvinyl polymer
Polyamide polymer
Polysaccharide
Polyester polymer

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Chemistry
The purest form of Iron is :

Cast iron
Pig iron
Steel
Wrought iron

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MORE MCQ ON Chemistry

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