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Chemistry

Chemistry
Vinegar made by fermentation from cane sugar contains

Lactic acid
Palmitic acid
Acetic acid
Citric acid

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Chemistry
The filter over which sewage is sprinkled is called as

Intermittent sand filter
Contact bed
Percolating filter
Trickling filter

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Chemistry
Lead pencil contains

Lead
Ferrous sulphide
Graphite
Lead sulphide

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Chemistry
Oxide of sulphur present in the atmosphere are washed down by rains to cause :

Depletion of fossil fuel reserves
Industrial smog formation
Lowering of pH of soil
Eutrophication in lakes

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Chemistry
Gelatin is mostly used in making ice–creams in order to

Prevent making a colloid
Enrich the aroma
Stabilise the colloid and prevent crystallisation
Stabilise mixture

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Chemistry
When a nutrient like fertilizer is present in large quantities in a water bodies, plants grow and decay in large numbers because of suffocating of pond that does not leave enough oxygen needed to support life. This type of pollution is called

None of these
Eutrophication
Smog
Green house effect

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