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Chemistry

Chemistry
The substance which does not expand on going from liquid state to solid state is

Type metal
Cast-iron
Aluminium
Water

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Chemistry
Maximum permissible concentration of copper in drinking water in mg/L is

1
0.01
0.05
2

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Chemistry
Which of the following is used to remove rust stains on cloth?

Oxalic acid solution
Lime
Petrol
Kerosene

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Chemistry
The chemical name of ‘Common salt’ is

Sodium nitrate
Ammonium chloride
Sodium chloride
Calcium chloride

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Chemistry
The laws of electrolysis are given by

Faraday
Lewis
Arrhenius
Ostwald

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Chemistry
Which of the following is ozone depleting pesticide ?

Benzene
Methyl bromide
D.T.
Ethylene ozonide

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MORE MCQ ON Chemistry

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