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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
What is the term used for the reaction of a substance with oxygen or air that causes the rapid release of heat and the appearance of a flame?
oxidation
combustion
burning
reduction
Author:
rikazzz
Comment
Chemical Industries
The color of crude oil is
brownish black
white
transparent
light yellow
Author:
rikazzz
Comment
Environmental Chemistry: Water
What is the third step of raw water treatment?
sedimentation
coagulation
filtration
chlorination
Author:
rikazzz
Comment
Environmental Chemistry: Water
Hepatitis is caused by
virus
bacteria
amoeba
parasite
Author:
rikazzz
Comment
Organic Chemistry
Simple alkanes (saturated hydrocarbons) are
straight chain hydrocarbons
branched chain hydrocarbons
no chain hydrocarbons
none of above
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
How much higher can be the temperature inside a greenhouse as compared to the outside?
20 °C higher
10 °C to 15 °C higher
5 °C higher
25 °C higher
Author:
rikazzz
Comment
Characteristics of Acids Bases and Salts
Which of the following is used in soap making and drain cleaners?
sodium hydroxide
potassium hydroxide
calcium hydroxide
magnesium hydroxide
Author:
rikazzz
Comment
Chemical Industries
The process in which metal is separated from its ore and prepared for use is called
metallurgy
mining
crushing
Solvay process
Author:
rikazzz
Comment
Hydrocarbons
Which of the following is true about alkanes?
they are insoluble in water
they are more dense than water
they are essentially polar
they are reactive towards most ionic compounds
Author:
rikazzz
Comment
Hydrocarbons
Alkanes that contain 5 to 17 atoms are in
solid state
liquid state
gaseous state
plasma state
Author:
rikazzz
Comment
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