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Chemistry

Chemistry
In silvery paints, the main constituent present is

White lead
Aluminium powder
Silver powder
Lead powder

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Chemistry
The most abundant element in the human body is

Nitrogen
Oxygen
Carbon
Iron

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Chemistry
The term 'brown air' is used for

Acid fumes
Photochemical smog
Industrial smog
Sulphurous smog

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Chemistry
The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is

5x
x/6
7.2 x
5x/36

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Chemistry
Saline soil contains

Lot of moisture
None of these
Hard rocks
High concentration of salt

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Chemistry
Which of the following has pH value 7?

H2SO4
Sodium Carbonate
HCl
Pure Water

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MORE MCQ ON Chemistry

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