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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 purest form of water in nature is

Lake water
Sea water
River water
Rain water

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

Multiple internal reflections
Multiple surface reflections
Highest refraction
Hundred percent transmission

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Chemistry
The process of improving the quality of rubber by heating it with sulphur is called.

Acceleration
Galvanization
Sulphonation
Vulcanization

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Chemistry
When iron rusts, its weight

Decreases
First increases and then decreases
Increases
Remains the same

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Chemistry
Soldering of two metals is possible because of the property of :

Surface tension
Osmosis
Cohesion
Viscosity

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