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Chemistry

Chemistry
The chief source of naphthalene is

Coal-tar
Diesel
Camphor
Charcoal

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Chemistry
Sea water is saltier than rain water because

The air around the sea is saltish
Sea animals are salt producing
Sea beds have salt producing mines
Rivers wash away salts from earth and pour them into the sea

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Chemistry
Stalactites and Stalagmites form due to the precipitation of :

CaCO3
MgCl2
MgCO3
CaCl2

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Chemistry
Diamonds are glittering and attractive because light incident on them undergoes

Multiple surface reflections
Hundred percent transmission
Multiple internal reflections
Highest refraction

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Chemistry
Fertiliser having high nitrogen content is :

Ammonium nitrate
Urea
Calcium citrate
Ammonium sulphate

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Chemistry
The metal compound commonly found in Sindhoor or Kumkum is based on

Tin
Lead
Copper
Zinc

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MORE MCQ ON Chemistry

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