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Chemistry

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

Helium
Hydrogen
Nitrogen
Oxygen

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Chemistry
In ice, the number of hydrogen bonds per water molecule is

1
2
4
8

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Chemistry
Gas released during Bhopal tragedy was :

Sodium isothiocyanate
Potassium isothiocyanate
Methyl isothiocyanate
Ethyl isothiocyanate

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Chemistry
What is the chemical symbol of mercury

None of these
Mr
Mg
Hg

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Chemistry
The substance that is added to make natural rubber strong and more bouncy is

Polythene
Sulphur
Chlorine
Sponge

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Chemistry
"Paramagnetism" is the property of

Completely filled electronics subshells
Completely vacant electronic subshells
Paired electrons
Unpaired electrons

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