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Chemistry

Chemistry
The metal present in vitamin B12 is

Fe
Mg
Co
Mo

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Chemistry
The percentage of nitrogen present in ammonium sulphate is :

0.25
0.305
0.27
0.18

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

Phosphoric acid
Phosphorus acid
Salicylic acid
Boric acid

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Chemistry
Which substance is used to retard the setting action of cement?

Na2O + K2O
CaSO4, 2H2O
CaO
Al2O3

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Chemistry
Which of the following is a commercial source of energy?

Sun
Dried dung
Agricultural waste
Natural gas

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Chemistry
Galvanised iron is made by coating iron with

Nickel
Sulphur
Chromium
Zinc

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MORE MCQ ON Chemistry

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