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Chemistry

Chemistry
Which one of the following has a maximum tendency to form M3 ion ?

Bi
N
P
As

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Chemistry
In chemical terms, what are alums used for purifying water for drinking purposes ?

Double nitrate
Double sulphates
Nitrates of aluminium
Hydrated chlorides

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Chemistry
Which variety of coal contains recognisable traces of the original plant material ?

Anthracite
Lignite
Bitumen
Peat

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Chemistry
Which one is the most dense liquid from the below

None of these
Gasolin
Choloform
Water

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Chemistry
Which one of the following is used as an anti-freeze for the automobile engines ?

Methanol
Propyl alcohol
Ethanol
Ethylene glycol

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Chemistry
Total number of halogen elements found in the periodic table is

5
3
13
8

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