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Chemistry

Chemistry
Who is known as the 'father of modern chemistry'

Robert Boyle
John Dalton
Antoine Lavoisier
Democritus

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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

A
B
D
C

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Chemistry
The Refrigerant 'FREON' is

Difluoro Dichloro Methane
Calcium Tetra Fluoride
Fluorspar and Felspar
Hydrofluosilicic Acid

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Chemistry
Pollutant from motor car exhaust that causes mental disease is

Hg
SO2
NO2
Lead

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Chemistry
Which of the following is not a chemical reaction'?

Burning of paper
Burning of coal
Conversion of water into steam
Digestion of food

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Chemistry
The most commonly used chemicals in the artificial rainmaking or cloud seeding are

Dry Ice (Frozen CO2)
Silver Iodide (Ag I)
Sodium Chloride (NaCl)
All of these

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