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Chemistry

Chemistry
What is the covalency of nitrogen in ammonia molecule

4
3
2
5

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Chemistry
Sour taste of ‘Coca Cola’ is due to the presence of

Hydrochloric acid
Formic acid
Phosphoric acid
Acetic acid

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Chemistry
The Refrigerant 'FREON' is

Fluorspar and Felspar
Hydrofluosilicic Acid
Calcium Tetra Fluoride
Difluoro Dichloro Methane

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Chemistry
Who modified Bohr's theory by introducing elliptical orbits for electron path

Thomson
Sommerfeld
Hund
Rutherford

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Chemistry
Philosopher’s Wool is

Zinc blende
Zinc oxide
Zinc carbonate
Zinc sulphate

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Chemistry
Match the List-I with List-II and select the correct answer using the codes given below the listsList-I (Green house gas)List-II(Major source)F.Carbondioxide1.Enteric fermentation in cattleG.Methane2.Burning of fossilH.Chloroflro carbons3.Mercury compounds in waste waterJ.Nitrous oxide4.Nylon production 5.Air conditioner and refrigeration unitsCodes :FGHJA.2154B.3421C.3241D.1234

B
D
A
C

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