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Chemistry

Chemistry
White lung cancer' is caused by

Silica
Paper
Asbestos
Textiles

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Chemistry
The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is

x/6
5x
7.2 x
5x/36

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Chemistry
Which variety of coal contains recognisable traces of the original plant material ?

Peat
Bitumen
Anthracite
Lignite

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Chemistry
The main source of Naphthalene is

Camphor
Coal-tar
Charcoal
Diesel

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

Cohesion
Osmosis
Surface tension
Viscosity

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Chemistry
When ice cubes are made, the entropy of water

Increases
May either increase or decrease depending on the process used
Decreases
Does not change

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MORE MCQ ON Chemistry

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