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Chemistry

Chemistry
At room temperature, the metal that remains liquid is:

Mercury
Platinum
Lead
Zinc

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Chemistry
Dry ice is the solid form of :

Air
Nitrogen
Water
Carbon di–oxide

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Chemistry
By which organic compound all the oils are known ?

Hydrocarbon
Carbohydrate
Protein
Ester

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Chemistry
Ethanol containing 5% water is known as

Power alcohol
Rectified spirit
Methylated alcohol
Denatured spirit

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Chemistry
In vulcanisation process, rubber can be hardened by adding

Nitrogen
Alcohol
Silicon
Sulphur

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Chemistry
The mass number of an atom is equal to

the number of neutrons
the number of nucleons
the number of protons and electrons
the number of protons

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MORE MCQ ON Chemistry

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