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Chemistry

Chemistry
The term 'brown air' is used for

Industrial smog
Sulphurous smog
Photochemical smog
Acid fumes

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Chemistry
Lead pencil contains

Ferrous sulphide
Lead sulphide
Graphite
Lead

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Chemistry
The natural resource, known as black gold is

Coal
Platinum
Lead
Tin

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Chemistry
Heavy metals got their name because compared to other atoms they have

Higher atomic masses
Higher atomic radii
Higher densities
Higher atomic numbers

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Chemistry
If the equilibrium constants for the systems H2 + I2 ? 2HI and 2HI ? H2 + I2 are K1 and K2 respectively, the relationship between K1 and K2 is :

K1 = K2/2
K1 = 2K2
K 1 = 1 /K2
K1 = K2

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Chemistry
The inert gas used as beacon light is

He
Kr
Ar
Ne

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MORE MCQ ON Chemistry

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