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Chemistry

Chemistry
White phosphorus is always kept under

Water
Benzene
Kerosene
Ether

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Chemistry
Threshold limit value of copper in the atmospheric air is

1.0 mg/m3
5.0 mg/m3
0.001 mg/m3
0.01 mg/m3

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Chemistry
If lime water is kept in the air, it turns milky due to presence of :

Oxygen
Carbondioxide
Sulphurdioxide
Nitrogen

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Chemistry
Vinegar is ________ .

Glacial acetic acid
Glacial formic acid
Diluted formic acid
Diluted acetic acid

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Chemistry
Chemical properties of isotopes

Must be different
Need not be same
Need not be different
Must be same

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Chemistry
The gas which turns into liquid at the lowest temperature among the following is

Nitrogen
Oxygen
Helium
Hydrogen

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MORE MCQ ON Chemistry

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