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Chemistry

Chemistry
The most reactive among the halogens is

Chlorine
Fluorine
Iodine
Bromine

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Chemistry
Glycol is used to manufacture which of the following ?

Rubber
Nylon
Artificial silk
Terylene

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Chemistry
Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water

Calcium
Magnesium
None of these
Manganese

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Chemistry
________ gives hardness to stainless steel.

Zinc
Lead
Carbon
Tin

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Chemistry
DDT and BHC may act as

None of these
Allergens
Carcinogens
Asthematic agents

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Chemistry
________ is used for making vinegar.

Malic acid
Acetic acid
Oxalic acid
Tartaric acid

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