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Chemistry

Chemistry
Aerated water contains

CO2
NO2
H2
SO2

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Chemistry
Physico-chemical characteristics of water in water sources undergo changes due to

Evapotranspiration
Aquatic macrophytes
Auatic fungi
Effluents

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

Aluminium phosphide
Hydrogenated wafers
Aluminium sulphide
Hydrogen sulphide

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Chemistry
Atoms having the same number of protons but different number of neutrons are called :

Higgs-boson
Cations
Isotopes
Anions

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Chemistry
The heat energy produced when the human body metabolises 1 gram of fat is

29 KJ
1 KJ
39 KJ
30 KJ

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Chemistry
Glycol is used to manufacture which of the following ?

Rubber
Artificial silk
Nylon
Terylene

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MORE MCQ ON Chemistry

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