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Chemistry

Chemistry
The heat value of combustion of Gasoline is

47000 kJ/kg
12600 kJ/kg
39400 kJ/kg
14600 kJ/kg

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Chemistry
The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

metallurgy
periodic table of contents
atomic structure
discovery of elements

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Chemistry
The major constituent of air is

nitrogen
hydrogen
oxygen
carbon dioxide

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Chemistry
Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called

Aerosols
Fumes
Mists
Smoke

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Chemistry
Which one is a naturally occuring noble gas

Potassium
Boron
Sodium
Argon

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Chemistry
Among the following the hardest metal is

Iron
Tungsten
Platinum
Gold

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MORE MCQ ON Chemistry

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