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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
Chemical Industries
Which of the following is used as a fuel for motor cars and vehicles?
Liquid Petroleum Gas (LPG)
petrol
naphtha
kerosene
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
What is the source of oxides of nitrogen?
Powerstations and industries using fossil fuels only
exhaust fumes of motor vehicles only
incomplete burning of wood
Powerstations & industries using fossil fuels and exhaust fumes of motor vehicles
Author:
rikazzz
Comment
Organic Chemistry
An alkane with molecular formula C10H22 is called
butane
octane
Nonane
Decane
Author:
rikazzz
Comment
Hydrocarbons
What type of reaction do alkynes undergo across the triple bond?
elimination reaction
substitution reaction
addition reaction
halogenation
Author:
rikazzz
Comment
Biochemistry Introduction
Sucrose, lactose, and maltose are classified as
monosaccharides
disaccharides
polysaccharides
Trisaccharides
Author:
rikazzz
Comment
Hydrocarbons
Which of the following are saturated hydrocarbons?
alkanes
alkenes
alkynes
alkyl radicals
Author:
rikazzz
Comment
Characteristics of Acids Bases and Salts
What is the color of Bromothymol blue in basic solution?
yellow
blue
pink
colorless
Author:
rikazzz
Comment
Chemical Equilibrium
If a change is imposed in concentration, temperature or pressure on a chemical system at equilibrium, the system responds in a way that the change is
not opposed
opposed
rapidly increased
slowly increased
Author:
rikazzz
Comment
Organic Chemistry
An alkane with molecular formula C8H18 is called
butane
octane
Nonane
Decane
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
Percentage of hydrogen in the air is
0.99
0.8
0.5
0.25
Author:
rikazzz
Comment
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