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Online Tests
Chemistry Fsc Part 1 Online Test MCQs With Answers
Question # 1
The unit of rate constant is same as that of rate of reaction in
Choose an answer
first order reaction
Second order reaction
Third order reaction
Zero order reaction
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Question # 2
Spectrum produced due to the transition of electron from M-Shall to L-Shell is.
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Absorption
Emission
Continuous
X rays
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Question # 3
Which of the following will have the same number of molecules at STP
Choose an answer
280 cm
3
of CO
2
and 280 cm
3
of N
2
O
11.2 dm
3
of O
2
and 32 g of O
2
44 g of CO
2
and 11.2 dm
3
of CO
28 g of N
2
and 5.6 dm
3
of oxygen
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Question # 4
In a electrolytic cell the electrons flow from
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Cathode to anode
Anode to cathode
From cathode to anode or opposite, depending upon the nature of electrolyte
All of the above
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Question # 5
The net heat change in a chemical reaction is same whether it is brought about in two or more different ways in one or several steps. It is knnown as
Choose an answer
Henry's law
Hess's law
Joule's principle
Law of combustion
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Question # 6
When solid KI dissolved in water, its heat of solution is positive. What would happen to dissolution when temperature is increased.
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Increases
Decreases
Remain same
Firs increases than decreases
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Question # 7
The difference of potential of two electrodes when concentration of solution is 1 M each at 25
o
C and 1 atmosphere is called.
Choose an answer
Electrode potential
Standard cell potential
Cell reaction
Cell voltage
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Question # 8
The born Haber cycle is the best application of law.
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Boyle's
Dalton's
Hess's
Graham's
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Question # 9
Fuel cells are mostly used in space air crafts as the source of.
Choose an answer
Power only
Drinking water
Drinking water and power
Fuel and drinking water
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Question # 10
In order to mention the B.P of water at 110
o
C the external pressure should be.
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Between 760 torr and 1200 torr
Between 200 torr and 760 torr
765 torr
Any value of pressure
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Question # 11
Kw for water at 0 oc is 0.1 x 10
-34
and at 100
o
C 7.5 x 10
-14
, How many times dissociation of water increase from 0
o
Cto 100
o
C
Choose an answer
7.5 times
50 times
75 times
100 times
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Question # 12
The structure of water molecule is.
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angular
Linear
Trigonal
Trigonal pyramidal
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Question # 13
How many balloon of 0.25 dm3 capacity at 1 atmospheric pressure can be filled from a hydrogen gas cylinder of 5 dm3 capacity at 10 atmospheric pressure.
Choose an answer
50
90
180
200
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Question # 14
The power of which the concentration of a substance appears in the rate expression is known as
Choose an answer
order of reaction with respect to that substance
Rate of reaction
Order of reaction
Molecularity of reaction
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Question # 15
Most of the reaction which give stable products are
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Exothermic
Endothermic
Isothermal
None of these
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Question # 16
If reactants have very low activation energy it means that reaction is.
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Slow
Fast
Endothermic
Exothermic
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Question # 17
When a chemical reaction is completed the
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Instantaneous rate > average rate
Instantaneous rate = average rate
Instantaneous rate is zero
Both average and instantaneous rates become zero
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Question # 18
Which of the following has linear structure.
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CO2
NH3
CH4
H2O
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