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Chemistry
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Acids Bases and Salts
23
Biochemistry Introduction
217
Characteristics of Acids Bases and Salts
114
Chemical Industries
66
Environmental Chemistry: Atmosphere
95
Environmental Chemistry: Water
61
Chemical Equilibrium
46
Hydrocarbons
86
Organic Chemistry
92
The Atmosphere
25
Show/Hide Answers
Organic Chemistry
In naming alkane the stem tells about the number of
hydrogen atoms
oxygen atoms
carbon atoms
bonds
Author:
rikazzz
Comment
Organic Chemistry
Compounds that have the same molecular formula but a different arrangement of atoms in their molecules are called
isotopes
isomers
hydrocarbons
organic compounds
Author:
rikazzz
Comment
Chemical Equilibrium
Which of the following is the correct representation for "active mass"?
( )
{ }
[ ]
none of above
Author:
rikazzz
Comment
Chemical Equilibrium
The law of mass action was proposed by
Newton
Le Chatellier
C.M Guldberg and P.Waage
Lewis
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
Which of the following is not true about sulfur dioxide?
it is colorless
it is odourless
it is an air pollutant
it causes breathing difficulties
Author:
rikazzz
Comment
Characteristics of Acids Bases and Salts
Which of the following is used in the manufacture of fertilizers and explosives?
hydrochloric acid
nitric acid
sulphuric acid
phosphoric acid
Author:
rikazzz
Comment
Everyday Science
Percentage of nitrogen in the air is
0.78
0.21
0.0093
0.0004
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
The extension of troposphere above the Earth's surface is
12 km
50 km
80 km
70 km
Author:
rikazzz
Comment
Hydrocarbons
Loss of hydrogen halide is called
halogenation
dehydration
Dehydrohalogenation
hydrogenation
Author:
rikazzz
Comment
Chemical Industries
The third step of the Solvay process is
preparation of ammonical brine
carbonation
filtration
calcination
Author:
rikazzz
Comment
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