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Chemistry

Chemistry
The chief constituent of vinegar is

Salycylic acid
Oxalic acid
Formic acid
Acetic acid

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Chemistry
Which of the following chemicals is used in photography ?

Silver bromide
Sodium chloride
Potassium nitrate
Aluminium hydroxide

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Chemistry
The mass of one Avogadro number of helium atom is

4 x 6.02 x 1023 gram
4.00 gram
1.00 gram
8.00 gram

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Chemistry
Which one of the following is used as a sowing agent in the preparation of soft drinks?

Phosphoric acid
Salicylic acid
Boric acid
Phosphorus acid

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Chemistry
Aspirin is

Acetyl Salicilic acid
Methoxy benzoic acid
Phenyl Salicilate
Methyl Salicilate

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Chemistry
What is the mass percentage of carbon in carbon dioxide (CO2)

0.273
0.201
0.323
0.158

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