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Chemistry

Chemistry
Which one is the most dense liquid from the below

Water
None of these
Choloform
Gasolin

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Chemistry
The lightest gas which is non-inflammable is

Oxygen
Nitrogen
Helium
Hydrogen

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Chemistry
"Paramagnetism" is the property of

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

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Chemistry
Forth floatation process to concentrate the minerals is applicable to

Bauxite
Calamine
Haematite
Chalcopyrites

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Chemistry
Permanent – hardness of water may be removed by addition of

Lime
Sodium carbonate
Alum
Potassium Permangante

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Chemistry
The gas dissolved in water that makes it basic is :

Carbon dioxide
Hydrogen
Ammonia
Sulphur dioxide

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MORE MCQ ON Chemistry

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