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Chemistry

Chemistry
The polymer used in making plastic crockery is

Decron
Melamine
Bakelite
Nylon

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Chemistry
Which of the following methods is used in determining the number average molar mass of a macromolecule

Sedimentation equilibrium
Viscosity
Light scattering
Osmotic pressure

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Chemistry
Colloids can be purified by

Dialysis
Condensation
Condensation
Condensation

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Chemistry
Vinegar is ________ .

Diluted formic acid
Glacial formic acid
Glacial acetic acid
Diluted acetic acid

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Chemistry
Besides CO2, the other green house gas is

O2
N2 N2
Ar Ar
CH4

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Chemistry
Chemical name of vinegar is

Ethanol
Formaldehyde
Acetone
Acetic acid

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