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Chemistry

Chemistry
By-product obtained by soap industry is

Caustic potash
Caustic soda
Glycerol
Naphthalene

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Chemistry
Catalyst is a substance which

Decreases the rate of reaction
Has no action on the rate of the reaction
Increases the rate of the reaction
None of these

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Chemistry
Mercury is emitted into air by

Burning garbage
Coal fire
Steam engine
Burning coal

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Chemistry
Formic acid is produced by

Mosquitoes
White ants
Red ants
Cockroaches

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Chemistry
Supersonic jet causes pollution by thinning of

SO2 layer
O3 layer
O 2 layer
CO2 layer

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Chemistry
The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

helium
methane
oxygen
ozone

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