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CHEMISTRY

Chemistry
The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are

All listed here
Silver Iodide
Dry ice or frozen carbon dioxide
Sodium Chloride

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Chemistry
'Fire-fighting clothes' are made from

Steatite
Asbestos
Mica
Talc

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Chemistry
Trinitrotoluene is

Used as an abrasive
Used to melt metals
Used to fuse two metals
Used as an explosive

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Chemistry
The chief source for the production of nitrogeneous fertilizers is :

Nitric acid
Nitrogen
Ammonia
Nitrogen dioxide

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Chemistry
Which one of the following elements is used in the manufacture of safety matches?

Silicon
Phosphorus
Graphite
Sodium

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