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Chemistry

Chemistry
The trans-uranium elements are the chemical elements with atomic numbers greater than

86
89
96
92

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Chemistry
An example of major air pollutant is

Helium
Carbon dioxide
Oxygen
Carbon monoxide

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Chemistry
Which one of the following is extensively used for sterilizing water ?

Alum
Bleaching powder
Borax powder
Soda powder

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Chemistry
'Fire-fighting clothes' are made from

Mica
Talc
Asbestos
Steatite

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Chemistry
The National Chemical Laboratory is situated in

Bangalore
New Delhi
Patna
Pune

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Chemistry
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of

p-electrons in CI(Z = 17)
d-electrons in Fe(Z = 26)
s-electrons in Mg(Z = 12)
p-electrons in Ne(Z = 10)

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