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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
Hydrocarbons
The red color of tomatoes is due to alkene named
ethene
propene
lycopene
butene
Author:
rikazzz
Comment
Biochemistry Introduction
Nutrition is derived by cows, cattle, goats, deer, sheep, and termites from
cellulose
starch
monosaccharides
oligosaccharides
Author:
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Comment
Environmental Chemistry: Water
Step of sewage water treatment in which effluent from a sewage plant is treated with chlorine is called
primary sewage treatment
secondary sewage treatment
activated sludge treatment
chlorination
Author:
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Comment
Chemical Industries
In magnetic separation, magnets are used to separate
mineral and gangue
metal and mineral
metal and gangue
iron and steel
Author:
rikazzz
Comment
Hydrocarbons
Each Hydrogen atom in an alkane forms
one bond
two bonds
three bonds
four bonds
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
Acid rain may have pH as low as
1.1
2.1
3.1
4.1
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
Which of the following saves us from the harmful effects of incoming ultraviolet radiation from the sun?
troposphere
mesosphere
thermosphere
ozone
Author:
rikazzz
Comment
Chemical Industries
The last step of metallurgy is
crushing, grinding or pulverizing of the ore
concentration of the ore
extraction of metal
refining of metal
Author:
rikazzz
Comment
Chemical Equilibrium
Which of the following reactions causes acid droplets to spew in all directions?
acid base reaction
combustion
vigorous reaction
decomposition
Author:
rikazzz
Comment
Chemical Equilibrium
What is denoted by the subscript 'c' in Kc?
chemical equilibrium
chemical reaction
molar concentration at equilibrium
rate of chemical reaction
Author:
rikazzz
Comment
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