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Chemistry

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

Sommerfeld
Hund
Rutherford
Thomson

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Chemistry
Which of the following is used to remove ink and rust stains on cloth?

Oxalic acid
Kerosene oil
Ether
Alcohol

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Chemistry
The nucleus of a hydrogen atom consists of

1 proton + 2 neutron
1 proton only
1 neutron only
1 electron only

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Chemistry
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

magnetic separation
liquation
levigation
leaching

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Chemistry
In chemical terms, what are alums used for purifying water for drinking purposes ?

Double nitrate
Nitrates of aluminium
Double sulphates
Hydrated chlorides

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Chemistry
Sodium Carbonate is commonly known as

Washing Soda
Caustic Potash
Baking Soda
Caustic Soda

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MORE MCQ ON Chemistry

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