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Chemistry General Science Test Hard Mode MCQs With Answers
Question # 1
A solution of sodium sulphate was electrolysed using some inert electrodes.The products at the electrodes are
Choose an answer
O
2
, H
2
O
2
, Na
O
2
, SO
2
O
2
, S
2
O
2
-
8
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Question # 2
Which one of the following compounds does not exist?
Choose an answer
NCI
5
AsF
5
SbCI
5
PF
5
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Question # 3
Which species represents the electrophile in aromatic nitrotaion?
Choose an answer
NO
-
2
+
NO
2
NO2
NO
-
3
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Question # 4
Enzymes are
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Proteins
Mineral
Oils
Fatty acids
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Question # 5
An endothermic reaction is one in which
Choose an answer
Heat is converted into electricity
Heat is obsorbed
Heat is evolved
Heat is converted into mechanical work
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Question # 6
The symbol of the element whose atoms have the outer most electronic configuration 2s
2
2p
3
is
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N
Li
P
Na
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Question # 7
The total number of protons in 10 g of calcium carbonate is (N
o
= 6.023 x 10
23
)
Choose an answer
1.5057 x 10
24
2.0478 x 10
24
3.0115 x 10
24
4.0956 x 10
24
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Question # 8
Which of the following transition metal ions will have definite value of magnetic moment?
Choose an answer
Sc
3+
Ti
3+
Cu
+
Zn
2+
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Question # 9
Reaction of ethylamine with chloroform in alcoholic KOH producers
Choose an answer
CH
3
OH
CH
3
NC
C
2
H
5
NC
C
2
H
5
CN
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Question # 10
Inter molecular forces in solid hydrogen are
Choose an answer
Covalent forces
Van der Waal forces or London dispersion force
Hydrogen bonds
All of these
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Question # 11
ΔH
neutralisation
is always
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positive
Negative
Zero
Positive or negative
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Question # 12
Carbon monoxide is pollutant as it
Choose an answer
Inactivates nerves
Inhibits glycolysis
Combines with oxygen
Combines with hemoglobin
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Question # 13
Hypo is used to photography for
Choose an answer
Developing picture
Picture printed
The colour of picture
The fixation of picture
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Question # 14
Sulphonation of benzoic acid produces mainly
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o-Sulphobenzoic acid
m-Sulphobenzoic acid
p-Sulphobenzoic acid
o- and p-Sulphobenzoic acid
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Question # 15
Benezene is obtained by fractional distillation of
Choose an answer
Heavy oil
Anthracene oil
Middle oil
Light oil
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Question # 16
Which of the following alkali metal hydroxides is the strongest base?
Choose an answer
LiOH
NaOH
KOH
CsOH
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Question # 17
Which of the following statement is correct if the intermolecular forces in liquids A, B and C are in the order A < B < C?
Choose an answer
B evaporates more readily than A
B evaporates less readily than C
A and B evaporates at the same rate
A evaporates more readily than C
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Question # 18
In which molecule carbon atom is sp
2
hybridized
Choose an answer
CH
4
C2H
4
C
2
H
2
None of the above
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Question # 19
Which of the following oxides is peroxide?
Choose an answer
Na
2
O
2
MnO
2
BaO
SO
2
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Question # 20
Variable valency is generally exhibited by
Choose an answer
Normal elements
Transition elements
Metallic elements
None of these.
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