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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
Biochemistry Introduction
Monosaccharides can contain
4 to 5 carbon atoms
1 to 5 carbon atoms
7 to 9 carbon atoms
3 to 6 carbon atoms
Author:
rikazzz
Comment
Characteristics of Acids Bases and Salts
What is the color of methyl orange in lemon juice?
red
yellow
blue
pink
Author:
rikazzz
Comment
Chemical Equilibrium
If the concentration, temperature, and pressure is changed, the system responds in a way that
follows the change
opposes the change
does not change at all
encourages the change
Author:
rikazzz
Comment
Biochemistry Introduction
Which of the following is required for boosting the immune system that protects against illness?
vitamin A
vitamin B
vitamin C
vitamin D
Author:
rikazzz
Comment
Biochemistry Introduction
Which of the following is true about DNA?
it is present in cell nucleus
it has single strand
it has ribose sugar
it is synthesized by RNA
Author:
rikazzz
Comment
The Atmosphere
The layer which protects the earth from being hit by meteoroids is
troposphere
mesosphere
thermosphere
stratosphere
Author:
rikazzz
Comment
Chemical Equilibrium
Unit of the equilibrium constant for H2 + CO2 H2O + CO is
no units
mol dm-3
dm3mol-1
[mol dm-3]-2
Author:
rikazzz
Comment
Biochemistry Introduction
Which of the following helps to regulate nerve impulse transmissions?
vitamin A
vitamin B
vitamin C
vitamin D
Author:
rikazzz
Comment
Acids Bases and Salts
Corrosive effect on the skin is caused by
acids
bases
water
mercury
Author:
rikazzz
Comment
Characteristics of Acids Bases and Salts
During etching, a piece of metal or glass is covered with
acid
base
wax
water
Author:
rikazzz
Comment
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