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Chemistry

Chemistry
What are the number of moles of CO2 which contains 16 g of oxygen?

0.2 mole
0.25 mole
0.5 mole
0.4 mole

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Chemistry
Which of the following is biodegradable ?

D.T.
Aluminium
Plastic
Paper

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Chemistry
Which of the following could be used as fuel in propellant or rockets ?

Liquid Nitrogen + Liquid Oxygen
Liquid Oxygen + Liquid Argon
Liquid Hydrogen + Liquid Nitrogen
Liquid Hydrogen + Liquid Oxygen

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Chemistry
Gold dissolves in

Aqua-regia
Nitric acid
Acetic acid
Hydrochloric acid

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Chemistry
The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

oxygen
nitrogen
carbon
hydrogen

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Chemistry
Cloud is a colloidal dispersion of

Air in a dispersion medium of water
Mist in a dispersion medium of air
Water drops in a dispersion medium of air
Fog in a dispersion medium of water

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MORE MCQ ON Chemistry

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