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Chemistry

Chemistry
The most abundant constituent of atmospheric air is :

Hydrogen
Carbon
Nitrogen
Oxygen

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Chemistry
Cooking gas is a mixture of

Methane and ethylene
Carbon monoxide and carbon dioxide
Butane and propane
Carbon dioxide and oxygen

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Chemistry
Among the following, which is always found in free-state in nature?

Sodium
Copper
Gold
Silver

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Chemistry
White phosphorus is generally kept under

Alcohol
Water
Kerosene oil
Glycerine

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Chemistry
The gas causing acid rain in an industrial area is

Carbon monoxide
Sulphur dioxide
Methane
Carbon dioxide

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Chemistry
Match the List-I with List-II and select the correct answer using the codes given belowList-I (Vitamin)List-II(Chemical compound)F.Vitamin A1.ThiaminG.Vitamin B12.RetinolH.Vitamin C3.Ascorbic acidJ.Vitamin E4.TocopherolCodes :FGHJA.4132B.2314C.4312D.2134

B
D
C
A

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