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Chemistry

Chemistry
Which of the following is biodegradable ?

D.T.
Plastic
Aluminium
Paper

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Chemistry
KMnO4 can be used as a/an

Pesticide
Fertiliser
Disinfectant
Insecticide

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Chemistry
Supersonic jet causes pollution by thinning of

O3 layer
O 2 layer
CO2 layer
SO2 layer

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Chemistry
Sea weeds are important source of

Iodine
Iron
Chlorine
Bromine

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Chemistry
Vinegar made by fermentation from cane sugar contains

Palmitic acid
Citric acid
Acetic acid
Lactic acid

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

Sludge
Scum
Sewage
Sewer

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