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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
Environmental Chemistry: Atmosphere
Which of the following is not true about ozone?
it is light blue in colour
it has unpleasant odor
it is harmful
it is not a pollutant
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Biochemistry Introduction
The strands of DNA are held together by
covalent bond
ionic bond
hydrogen bond
dipole dipole interaction
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Comment
Hydrocarbons
Each carbon atom in an alkane forms
one bond
two bonds
three bonds
four bonds
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Comment
Organic Chemistry
The general formula for carboxylic acids is
R-OH
R-O-R
R-COOH
R-NH2
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Organic Chemistry
If the OH group is attached to the benzene ring, the compound form is
alcohol
phenol
alkene
alkyne
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Characteristics of Acids Bases and Salts
What is the color of methyl red in acidic solution?
red
yellow
blue
colorless
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Biochemistry Introduction
Strand of RNA is made of
ribose sugar
phosphate unit
nitrogen base
all of above
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Comment
Chemical Industries
Ore of copper is called
hematite
chalcopyrite
bauxite
halite
Author:
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Comment
Environmental Chemistry: Atmosphere
Which of the following is not true about carbon monoxide?
it is poisonous
it is insoluble in water
it is an air pollutant
it can cause death
Author:
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Comment
Environmental Chemistry: Water
Natural water is
pure
impure
non distilled
distilled
Author:
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