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Chemistry

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

Nitrogen
Carbon dioxide
Oxygen
Hydrogen

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Chemistry
Which one of the following has greatest mass ?

Neutron
Electron
Hydrogen nucleus
Proton

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Chemistry
A balloon filled with helium rises in air because

Helium is less dense than air
The balloon is weightless
Helium pushes down on the air below the balloon
Air exerts an upward force on the balloon

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Chemistry
Which among the following is pure matter ?

Iron
Air
Carbon–dioxide
Brass

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Chemistry
The polymer used in making plastic crockery is

Nylon
Melamine
Decron
Bakelite

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Chemistry
Methanoic and ethanoic acids can be distinguished by the action of

NaHCO3
SOCl2
NaOH
Tollen's reagent

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MORE MCQ ON Chemistry

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