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Chemistry

Chemistry
Petroleum is a mixture of

Hydrocarbons
Elements
Polymers
Salts

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Chemistry
The term 'brown air' is used for

Industrial smog
Sulphurous smog
Acid fumes
Photochemical smog

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

Scum
Sewage
Sewer
Sludge

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Chemistry
The depletion in Ozone layer is caused by ________ .

Methane
Carbon dioxide
Nitrous oxide
Chlorofluorocarbons

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Chemistry
Milk is

Suspension
Emulsion
Foam
Gel

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Chemistry
Rectified spirit is :

Methylated spirit
95% ethyl alcohol
100% ethyl alcohol
Tincture iodine

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MORE MCQ ON Chemistry

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