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Chemistry

Chemistry
Which of the following is not a natural source of hydrocarbon?

Coal
Natural Gas
Mica
Petroleum

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Chemistry
Which is the purest commercial form of iron ?

Pig iron
Wrought iron
Stainless steel
Steel

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Chemistry
Besides CO2, the other green house gas is

N2 N2
CH4
O2
Ar Ar

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Chemistry
Gobar gas contains mainly :

Propylene
Acetylene
Ethylene
Methane

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Chemistry
Which of the following is a man-made source of air pollution ?

Forest fire
All of these
Automobile exhaust
Bacterial action in soil and swamp areas

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Chemistry
'Atomic theory' of matter was given by

Avogadro
Pascal
Dalton
Newton

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