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Chemistry

Chemistry
The pollutant responsible for ozone holes is ________

CO
SO2
CO2
CFC

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Chemistry
Sodium is produced by the electrolysis of

Aqueous brine solution
Its cyanide complex
Molten sodium chloride
Molten sodium carbonate

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Chemistry
The number of hydrogen bonds between guanine and cytosine in DNA is

3
1
4
2

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Chemistry
Many people died in London in 1952 as result of air pollution producing

Mist
Sleet
Fog
Smog

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Chemistry
Domestic cooking gas consists mostly of

Methane and ethane
Hydrogen and acetylene
Liquified butane and isobutane
Ethylene and carbon monoxide

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Chemistry
Ultraviolet radiation striking the earth is due to the depletion of

Carbon dioxide
Ozone
Oxygen
Carbon monoxide

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MORE MCQ ON Chemistry

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