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Chemistry

Chemistry
Brass is a

Compound
Element
Homogeneous mixture
Heterogeneous mixture

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Chemistry
Which of the following is secondary air pollutant ?

NO2
Dust particles
SO2
Photochemical smog

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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

C
D
A
B

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Chemistry
If lime water is kept in the air, it turns milky due to presence of :

Nitrogen
Carbondioxide
Oxygen
Sulphurdioxide

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Chemistry
The resources which can be used continuously, year-after -year are called

Non-renewable
Abiotic
Renewable
Biotic

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Chemistry
Many people died in London in 1952 as result of air pollution producing

Mist
Smog
Sleet
Fog

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MORE MCQ ON Chemistry

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