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Chemistry

Chemistry
The most common cause of pollution of air is

Smoke
Sulphur dioxide
Carbon dioxide
Carbon monoxide

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

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

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Chemistry
The example of oligosaccharide is

Ribose
Glucose
Cellulose
Sucrose

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Chemistry
At room temperature, the metal that remains liquid is:

Zinc
Lead
Platinum
Mercury

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Chemistry
Which of the following is the main nitrogenous waste in humans ?

Ammonia
Urea
Uric Acid
Ammonium Nitrate

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Chemistry
Thermal electricity is generated by using which of these ?

Coal and Natural Gas only
None of these
Coal only
Coal, Natural Gas and Petroleum

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