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Chemistry

Chemistry
Which of the following metals has least melting point ?

Mercury
Copper
Gold
Silver

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Chemistry
The metal used for making aircrafts and rockets is

Copper
Lead
Nickel
Aluminium

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Chemistry
Nitrogen fixation is a process of

Conversion of molecular nitrogen to ammonia
Utilisation of nitrogen gas
Conversion of organic nitrogen to proteins
Assimilation of nitrate

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Chemistry
The common name of sodium bicarbonate is

Soda lime
Soda ash
Baking powder
Baking soda

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Chemistry
The chemical used for cloud seeding for artificial rains is

Potassium Nitrate
Silver Iodide
Potassium Bromide
Silver Nitrate

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Chemistry
Which one of the following is not coal variety?

Bituminous
Peat
Lignite
Dolomite

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