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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
Ultraviolet radiation striking the earth is due to the depletion of

Carbon dioxide
Carbon monoxide
Oxygen
Ozone

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Chemistry
________ is used for making vinegar.

Tartaric acid
Malic acid
Acetic acid
Oxalic acid

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Chemistry
The number of electrons presents in H+ is

zero
two
three
one

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Chemistry
The pair of compounds used as anaesthetic in medicines :

Nitrous oxide, Chloroform
Ether, Ammonia
Chloroform, Nitrogen dioxide
Nitrogen dioxide, ether

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Chemistry
A thick paste of cement, sand and water is called

Concrete
Kiln
Mortar
R.C.C.

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MORE MCQ ON Chemistry

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