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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
Organic Chemistry
Which of the following is a group of atoms obtained by removing one hydrogen atom from an alkane?
alkene
alkyne
functional group
alkyl radical
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Characteristics of Acids Bases and Salts
What is the pH of tomato juice?
4
7
8
9
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Comment
Everyday Science
Percentage of oxygen in the air is
0.78
0.21
0.0093
0.0004
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Chemical Industries
The fourth step of the Solvay process is
preparation of ammonical brine
carbonation
filtration
calcination
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Biochemistry Introduction
On hydrolysis, all proteins produce
amines
peptide bonds
amino acids
dipeptide
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Environmental Chemistry: Water
Process in which chlorine is added to water to kill any remaining bacteria is called
sedimentation
coagulation
filtration
chlorination
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Comment
Organic Chemistry
The formula that shows the arrangement of atoms in a compound is called
molecular formula
structural formula
compound formula
empirical formula
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Comment
Biochemistry Introduction
Which of the following is a process used to convert vegetable oils into vegetable ghee?
dehydration
hydrogenation
Dehydrohalogenation
halogenation
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Hydrocarbons
In alkenes, the two carbon atoms forming double bond are joined to how many atoms?
one
two
three
four
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Characteristics of Acids Bases and Salts
What is the pH at which Phenolphthalein changes color?
5.5
7
9
10
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rikazzz
Comment
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