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Chemistry

Chemistry
In which of the following states maximum iron ore is found ?

FeS2
Fe2O3
Fe3O4
FeCO3

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Chemistry
How many electrons can be accommodated in d-orbital

10
8
3
6

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Chemistry
Supersonic jet causes pollution by thinning of

O3 layer
O 2 layer
CO2 layer
SO2 layer

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Chemistry
Which one of the following contributes largely to the ‘green house effect’ ?

Ozone
Carbon dioxide
Water vapour
Carbon monoxide

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Chemistry
Cement is formed by strongly heating a mixture of

Chalk and graphite
Limestone and graphite
Clay and graphite
Limestone and clay

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Chemistry
The chemical name of 'Hypo' commonly used in photography is

Sodium thiosulphate
Silver iodide
Silver nitrate
Sodium nitrate

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MORE MCQ ON Chemistry

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