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Chemistry

Chemistry
Vulcanization of rubber is carried out by adding

Sulphur
Carbon
Ozone
Phosphorus

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Chemistry
An emulsion is a colloidal solution of

Gas in solid
Liquid in liquid
Solid in liquid
Solid in Solid

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Chemistry
The absolute temperature of a gas is doubled and the pressure is reduced to half, the volume of the gas

Will be reduced to half
Will increase four-fold
Remains unchanged
Will be doubled

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Chemistry
The chemical used in embalming biological materials is

Ethylene glycol
Gaseous formaldehyde
Formaldehyde in water
Formaldehyde in methanol

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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
If the sewage is fully oxidized, the nitrogen is in the form of

Nitrites
Nitrates
Ammonia
Nitramines

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MORE MCQ ON Chemistry

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