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Chemistry General Science Test Hard Mode MCQs With Answers
Question # 1
The total pressure exerted by a number of non reacting gases is equal to the sum of partial pressure of the gases under the same conditions is known as
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Boyle's law
Charle's law
Avogadro's law
Dalton's law
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Question # 2
The dimension of rate constant of a second order reaction involves
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Neither time nor concentration
Only time
Time and concentration
Time and square of concentration
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Question # 3
Wholer prepared ures from
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Ammonia
NH
4
CNO
NH
3
uric acid
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Question # 4
Oleum is
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Castor oil
Oil of vitriol
Fuming of H
2
SO
4
None of them
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Question # 5
The equilibrium
Cr
2
O
2-
7
2CrO
2
4
is shifted to right in
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An acidic medium
A basic medium
A neutral medium
It does not exist
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Question # 6
During the folding of filter paper the apex form angle of about
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80
o
60
o
180
o
90
o
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Question # 7
1-Chloropropane has two isomers It is an example of
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Chain isomerism
Position isomerism
Functional group isomerism
Metamerism
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Question # 8
In which of the following elements +1 oxidation state is more stable than +3
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B
AI
Ga
Ti
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Question # 9
Acetic anhydride is obtained form acetyl chloride by the reaction of
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P
2
O
5
H
2
SO
4
CH
3
COONa
CH
3
COCH
3
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Question # 10
Which one is not usually used for the crystallization
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Acetone
Acetic acid
Sulphuric acid
Chloroform
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Question # 11
The effect of increasing the pressure on the following equilibrium 2A + 3B | | 3A + 2B is
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Forward reaction is favoured
Backward reaction is favoured
No effect
None of the above
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Question # 12
Which of the following belongs to the halogen family?
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Francium
Polonium
Radium
Astatine
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Question # 13
Which of the following pairs are chemically dissimilar?
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Na and K
Ba and Sr
Zr and Hf
Ca and Zn
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Question # 14
Red P can be obtained from white P by
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Heating it with a catalyst in an inert atmosphere
Distilling it in an inert atmosphere
Dissolving it in CS
2
and crystallzing
Melting it and pouring the liquid into water
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Question # 15
The acid used in lead storage cells is
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Phosphoric acid
Nitric acid
Sulphuric acid
Hydrochloric acid
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Question # 16
When excess of SnCl
2
is added to a solution of HgCl
2, a white precipitate turning to grey is obtained. They grey colour is due to the formation of
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Hg
2
Cl
2
SnCl
4
Sn
Hg
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Question # 17
Which of the following possesses the highest melting point?
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Chlorobenzene
o- Dichlorobenzene
m-Dichlorobenzene
p-Dichlorobenzene
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Question # 18
Bleaching action of bleaching powder is due to the liberation of
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O
2
OCl
-
Cl
2
Cl
-
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Question # 19
Fertililzer are made by
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Nature only
Artificial methods only
Both artificial and natural methods
None of the above
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Question # 20
Phosphorus pentoxide finds use as
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An oxidizing agent
A reducing agent
a bleaching agent
A dehydration agent.
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Question # 21
Dehydration of glycerol give
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Propane
Propene
Acrolein
Benzene
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Question # 22
Which of the following does not reflect the periodicity of elements?
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Bonding begaviour
Electronegativity
Ionisation potential
Neutron/proton ratio
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