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Chemistry

Chemistry
Who modified Bohr's theory by introducing elliptical orbits for electron path

Hund
Thomson
Rutherford
Sommerfeld

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Chemistry
Brass is made of

Copper, tin and zinc
Copper and tin
Tin and lead
Copper and zinc

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Chemistry
A powerful eye irritant present in smog is

Nitric oxide
Peroxyacetyl nitrate
Sulphur dioxide
Carbon dioxide

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Chemistry
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is

1 gram of molecule
5 gram of molecule
10 gram of molecule
0.5 gram of molecule

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Chemistry
Which one of the following organic compound is used to remove stains of iron compounds?

Benzoic acid
Oxalic acid
Cinnamic acid
Phthalic acid

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Chemistry
Cooking gas is a mixture of

Carbon monoxide and carbon dioxide
Butane and propane
Carbon dioxide and oxygen
Methane and ethylene

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MORE MCQ ON Chemistry

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