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Chemistry

Chemistry
Extensively used nitrogenous fertilizer is

Nitro-lime
Urea
Ammonium sulphate
Ammonium nitrate

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Chemistry
White phosphorus is generally kept under

Glycerine
Alcohol
Water
Kerosene oil

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Chemistry
Which of the following metals has least melting point ?

Silver
Gold
Copper
Mercury

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Chemistry
PH scale ranges from

None
8 – 14
0 – 14
0 – 7

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Chemistry
In chemical terms, what are alums used for purifying water for drinking purposes ?

Hydrated chlorides
Nitrates of aluminium
Double sulphates
Double nitrate

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Chemistry
Colour imparted to the Bunsen flame by strontium salt is

Crimson red
Brick red
Apple-green
Bluish green

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