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Chemistry

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

Bi
As
P
N

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Chemistry
Which of the following is a man-made source of air pollution ?

Bacterial action in soil and swamp areas
All of these
Forest fire
Automobile exhaust

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Chemistry
Methanoic and ethanoic acids can be distinguished by the action of

NaHCO3
NaOH
SOCl2
Tollen's reagent

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Chemistry
A mixture of water and alcohol can be separated by

Evaporation
Decantation
Distillation
Filtration

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Chemistry
The common refrigerant in domestic refrigerator is

Neon
Nitrogen
Oxygen
Freon

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Chemistry
The oxidation number of nickel in K4[Ni(CN)4] is

4
Zero
8
–4

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