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Chemistry

Chemistry
________ is a by product of sewage treatment and can be decomposed to produce biogas

Sludge
Sewer
Scum
Sewage

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Chemistry
In a period from Li to F, ionisation potential

Cannot be predicted
Remains same
Increases
Decreases

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Chemistry
Which of the following is ozone depleting pesticide ?

Benzene
Ethylene ozonide
Methyl bromide
D.T.

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Chemistry
The gas which emits from rice field is

Methane
Nitrogen
Ethane
All of these

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Chemistry
The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

1/3
1/8
1/6
1/4

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Chemistry
Commercial Vaseline is derived from

Petroleum
Wool wax
Plant gums
Coal tar

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MORE MCQ ON Chemistry

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