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Chemistry

Chemistry
Mercury is emitted into air by

Steam engine
Burning garbage
Burning coal
Coal fire

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Chemistry
Which one of the following organic compounds has fruity smell?

Aldehyde
Ether
Alcohol
Ester

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Chemistry
In which of the following ions , the colour is not due to d-d transition ?

[Ti(H2O)6]3+
[CoF6]3+
[CrO4]2−
[Cu(NH3)4]2+

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Chemistry
The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is

7.2 x
5x
5x/36
x/6

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Chemistry
The source of energy that causes the least global warming is

Geothermal energy
Natural Gas
Coal
Petroleum

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Chemistry
One of the constituents of tear gas is

Ether
Chloropicrin
Ethane
Ethanol

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MORE MCQ ON Chemistry

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