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Chemistry

Chemistry
Iron is extracted from

Haematite
Bauxite
Dolomite
Cinnabar

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Chemistry
The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is

1.568 x 103
6.023 x 1023
6.023 x 1019
4.84 x 1017

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Chemistry
An example of major air pollutant is

Carbon monoxide
Oxygen
Carbon dioxide
Helium

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Chemistry
Carbon monoxide is an inflammable gas. Which one of the following is also inflammable?

Helium
Hydrogen
Oxygen
Nitrogen

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Chemistry
The element with highest first ionisation energy is

Hydrogen
Sodium
Helium
Lithium

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Chemistry
Yellow Cake' an item of smuggling across border is

A crude from of cocaine
Unreformed gold
Uranium oxide
A crude from of heroin

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MORE MCQ ON Chemistry

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