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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
Impure camphor is purified by

Fractional crystallisation
Fractional distillation
Steam distillation
Sublimation

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Chemistry
In surgery, metal pins are used for joining together broken bones. These metal pins remain uncorroded in the body. What is the material of these pins?

Titanium
Copper
Iron
Aluminium

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Chemistry
Total number of halogen elements found in the periodic table is

5
13
3
8

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Chemistry
Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called

Fumes
Aerosols
Mists
Smoke

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Chemistry
Vulcanized rubber contains sulphur

10-15%
3-5%
7-9%
0.02

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MORE MCQ ON Chemistry

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