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Chemistry

Chemistry
'Vinegar' is a commercial name of

Hydrochloric acid
Acetic acid
Oxalic acid
Citric acid

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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
Brass gets discoloured in air due to constant exposure in presence of:

Hydrogenated wafers
Aluminium sulphide
Hydrogen sulphide
Aluminium phosphide

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Chemistry
The pH of human blood is between :

4.5-5
6.5-7
7.5-8
44052

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Chemistry
Indane gas is mixture of

Methane and oxygen
Butane and hydrogen
Butane and propane
Butane and oxygen

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Chemistry
Entropy of Universe is always

Increasing
Zero
Constant
Decreasing

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MORE MCQ ON Chemistry

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