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Chemistry

Chemistry
Highest percentage of carbon is found in which form of coal?

Bituminous
Lignite
Anthracite
Peat

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Chemistry
Galena is a mineral of

Calcium
Gold
Iron
Lead

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Chemistry
The biogas used for cooking is a mixture of which of the following?

Methane and carbon monoxide
Carbon dioxide and oxygen
Methane and carbon dioxide
Isobutane and propane

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Chemistry
Which is the purest commercial form of iron ?

Pig iron
Steel
Wrought iron
Stainless steel

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Chemistry
Tear gas used by the police to disperse the mob contains

Hydrogen sulphide
Ammonia
Carbon dioxide
Chlorine

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Chemistry
The main buffer system of the human blood is

H2CO3 - CO32-
H2CO3 - HCO3
CH3COOH - CH3COO-
NH2CONH2 - NH2CONH+

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MORE MCQ ON Chemistry

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