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Chemistry

Chemistry
What is the chemical symbol of mercury

Hg
Mg
None of these
Mr

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Chemistry
The presence of Cobalt in Vitamin B12 was established for the first time by

Borax-Bead test
Hydrolysis test
Spectroscopy
Sodium Nitroprusside test

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Chemistry
Acid rain is caused by the pollution of environment by

Carbon monoxide and Carbon dioxide
Carbon dioxide and Nitrogen
Nitrous oxide and Sulphur dioxide
Ozone and Carbon dioxide

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Chemistry
Which one of the following is not a cause for present global warming and climate change ?

Deforstation
CFC emission
Carbondioxide emission
Methane emission

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Chemistry
The chief constituent of vinegar is

Salycylic acid
Acetic acid
Oxalic acid
Formic acid

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Chemistry
The most electronegative element among the following is

bromine
oxygen
sodium
fluorine

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MORE MCQ ON Chemistry

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