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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
Chemical Industries
Process in which sodium carbonate is manufactured is called
calcination
metallurgy
Solvay process
carbonation
Author:
rikazzz
Comment
Chemical Industries
Number of carbon atoms per molecule in LPG is
1 to 4
5 to 10
8 to 12
10 to 16
Author:
rikazzz
Comment
Biochemistry Introduction
Plants convert glucose (C
6
H
12
O
6
) in to
starch only
cellulose only
sucrose
starch and cellulose
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
Which of the following is an excellent heat absorber and causes global warming?
chlorofluorocarbons (CFCs)
methane
carbon monoxide
lead compounds
Author:
rikazzz
Comment
Characteristics of Acids Bases and Salts
The solution becomes acidic when pH is
greater than 7
less than 7
greater than 6
less than 6
Author:
rikazzz
Comment
Hydrocarbons
Glyoxal formed by loss of two water molecules by tetrahydroxy ethane oxidizes to
ethylene glycol
acetylene
oxalic acid
benzoic acid
Author:
rikazzz
Comment
Biochemistry Introduction
The key to the ability of DNA to pass and store genetic information is its
hydrogen bonding
double stranded structure
deoxyribose sugar
nitrogen base
Author:
rikazzz
Comment
Environmental Chemistry: Water
What percentage of fresh water is available to man?
0.2
0.02
0.002
0.0002
Author:
rikazzz
Comment
Biochemistry Introduction
The condensed structural formula of Butyric acid is
CH3-CH2-CH2-COOH
CH3-(CH2)4-COOH
CH3-(CH2)14-COOH
CH3-(CH2)16-COOH
Author:
rikazzz
Comment
Chemical Industries
The boiling point of fuel oil is
270 °C to 340 °C
350 °C to 500 °C
500 °C to 600 °C
more than 500 °C
Author:
rikazzz
Comment
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