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Chemistry

Chemistry
The number of electrons presents in H+ is

two
one
three
zero

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Chemistry
Which one of the following elements is least likely to be found in commercial fertilisers?

Phosphorous
Potassium
Silicon
Nitrogen

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Chemistry
Brass gets discoloured in air due to constant exposure in presence of:

Aluminium sulphide
Aluminium phosphide
Hydrogenated wafers
Hydrogen sulphide

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Chemistry
Which of the following elements is non-radioactive ?

Uranium
Plutonium
Thorium
Zirconium

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Chemistry
Threshold limit value of copper in the atmospheric air is

0.001 mg/m3
5.0 mg/m3
1.0 mg/m3
0.01 mg/m3

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Chemistry
Which of the following has least negative electron gain enthalpy

P
S
Cl
F

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MORE MCQ ON Chemistry

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