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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
Characteristics of Acids Bases and Salts
What is the color of Phenolphthalein in a basic solution?
yellow
blue
pink
colorless
Author:
rikazzz
Comment
Organic Chemistry
If we remove one hydrogen (H) atom from an alkane (saturated hydrocarbon), we get
alkyl group
alkene group
alkyne group
aldehyde group
Author:
rikazzz
Comment
Organic Chemistry
What is the other term used for saturated hydrocarbons?
alkenes
alkynes
alkanes
none of above
Author:
rikazzz
Comment
Acids Bases and Salts
The salt among the following is
HCl
KCl
HNO
3
H
34
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
What is the source of lead compounds?
aerosol sprays foams
exhaust fumes of motor vehicles
incomplete burning of wood
none of above
Author:
rikazzz
Comment
Biochemistry Introduction
Each nucleotide consists of
nitrogenous base
five carbon sugar
phosphate group
all of above
Author:
rikazzz
Comment
Acids Bases and Salts
In pure water, the concentrations of
H
+
and OH
–
ions are equal
H
+
ions is more
OH
–
ions is more
Cl
–
is more
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
Which of the following is true about nitrogen dioxide?
it is colorless
it is odourless
it is soluble in water
it is soluble in oxygen
Author:
rikazzz
Comment
Characteristics of Acids Bases and Salts
What is the first part of the name of salt?
negative part of the acid
base
metal ion
non metallic ion
Author:
rikazzz
Comment
Biochemistry Introduction
Which of the following is a protein coded by DNA?
amylase
insulin
pepsin
lipase
Author:
rikazzz
Comment
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