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Chemistry General Science Test Hard Mode MCQs With Answers
Question # 1
Which of the following has greatest tendency to lose electron?
Choose an answer
F
Fr
S
Be
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Question # 2
Which of the following is different from the other three oxides?
Choose an answer
MgO
SnO
ZnO
Cr
2
O
3
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Question # 3
Which one is primary alcohol?
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Buten-2-oI
Propan-2-oI
Butane-1-oI
2,3-Dimethylhexane-4-oI
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Question # 4
Heating a mixture of sodium benzoate and soda lime gives
Choose an answer
Methane
Benzene
Sodium benzene
Calcium benzoate
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Question # 5
The structure of XeF
6
Choose an answer
Distorted octahedral
Pyramidal
Tetrahedral
None of the above
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Question # 6
The rate of reaction between A and B increases by a factor of 100 when the concentration with respect to A is increased 10 folds the order of reaction w.r.t A is
Choose an answer
10
1
4
2
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Question # 7
Propyne on hydrolysis in presence of H
2
SO
4
and HgSO
4
gives
Choose an answer
Acetaldehyde
Actone
Formaldehyde
None
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Question # 8
The substance used as a smoke screen in warfare is
Choose an answer
SiCI
4
PH
3
PCI
5
Acetylene
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Question # 9
The maximum number of electrons in a subshell for which / = 3 is
Choose an answer
14
10
8
4
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Question # 10
Among alkali metal salts,the lithium salts are the poorest conductors of electricity in aqueous solution because of
Choose an answer
Easy diffusion of Li
+
ions
Lower ability of Li
+
ions to polarize water molecules
Lowest charge to radius ratio
Higher degree of hydration of Li
+
ions.
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Question # 11
AI is more reactive than Fe but AI is less easily corroded than Fe Because
Choose an answer
It is a noble metal
Oxygen forms a protective reaction easily with water
Iron undergoes reaction easily with water
Fe form mono and divalent ions.
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Question # 12
The number of electrons in the M shell of the element with atomic number 24 is
Choose an answer
24
12
13
8
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Question # 13
Minamata disease is due to pollution of
Choose an answer
Organic waste
Oil spill in water
Industrial waste containing mercury into fishing water
Arsenic into the atmosphere
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Question # 14
Hess's law deals with
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Changes in heat or reaction
Rate of reaction
Equilibrium constant
Influence of pressure on volume of a gas.
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Question # 15
Gooch crucible is used for the filtration of precipitates having
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High Solubility
High concentration
High ignition temperature
Low Temperature
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Question # 16
In N.W.F.P the phosphate fertilizers are produced at
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D.I.Khan
Haripur
Nowshera
Dargai
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Question # 17
The bond angle H-O-H in ice is closest to
Choose an answer
120
° . 28'
60
°
90
°
109
°
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Question # 18
Portland cement is manufactured by using
Choose an answer
Limestone, clay and sand
Limestone, gypsum and sand
Limestone, gypsum and alumina
Limestone, clay and gypsum
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Question # 19
Dolomite has the composition
Choose an answer
KCL.MgCL
2
.6H
2
O
Na
3
AIF
6
CaCO
3
.MgCO
3
CaCL
2
.MgCl
2.
6H
2
O
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Question # 20
An electrolyte
Choose an answer
Forms complex ions in solution
Gives ions only when electricity is passed
Possesses ions even in solid state
Gives ions only when dissolved in water
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Question # 21
Which of the following is acidic?
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SO
3
N
2
O
BeO
HgO
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Question # 22
Rusting of iron is catalysed by
Choose an answer
Fe
O
2
Zn
H
+
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