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Chemistry

Chemistry
Which of the following metals has least melting point ?

Mercury
Gold
Copper
Silver

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Chemistry
What is the mass percentage of oxygen in carbon dioxide (CO2)

0.727
0.305
0.509
0.658

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Chemistry
Zinc sulphide is commonly used as

Rodenticide
Fungicide
Herbicide
Deodorant

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Chemistry
The Refrigerant 'FREON' is

Hydrofluosilicic Acid
Fluorspar and Felspar
Difluoro Dichloro Methane
Calcium Tetra Fluoride

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Chemistry
The gas that is used in the manufacture of vanaspati ghee is :

Hydrogen
Carbon dioxide
Nitrogen
Oxygen

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Chemistry
The most abundant element in the earth’s atmosphere is

Argon
Nitrogen
Krypton
Oxygen

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MORE MCQ ON Chemistry

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