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Chemistry Fsc Part 1 Online Test MCQs With Answers
Question # 1
In silver oxide battery, the cathode is mad up of.
Choose an answer
AgO
Ag2O
Ag2O3
Ag
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Question # 2
A negative deviation from Raoult's law in solution means, the solution has
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High boiling point and high vapour pressure
High boiling point and low vapour pressure
Low boiling point and low vapour pressure
Low boiling point and high vapour pressure
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Question # 3
Half -Life period of a first order reacting is independent of.
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Initial concentration of the compound
Conditions of temperature
Presence of catalyst
All the above
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Question # 4
Molal boiling constant for water is 0.52
o
C. If 6 g of urea is dissolved in 100 g of water, what will be its boiling point.
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100.52
o
C
-100.52
o
C
100
o
C
99
o
C
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Question # 5
Which one of the following methods will be used to separate the mixture of NaCl and sand.
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Chromatography
Solvent extraction
Sublimation
Filtration
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Question # 6
Calcium has isotopes
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7
9
1
6
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Question # 7
The boiling point of glycerin at one atm is.
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280
o
C
290
o
C
100
o
C
110
o
C
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Question # 8
When one mole of each of the following is completely burned in oxygen, which gives the largest mass of carbon dioxide.
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Diamond
C2H6
Methane
CO2
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Question # 9
The boiling point of pure water at 1 atm pressure is.
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98
o
C
100
o
C
69
o
C
120
o
C
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Question # 10
The highest temperature above which a gas cannot be liquified, no matter how much the pressure is applied is known as
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Boiling temperature
Consulate temperature
Absolute zero
Critical temperature
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Question # 11
Which one of the following gases diffuse more rapidly.
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Cl2
CO2
CH4
N2
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Question # 12
The components of which mixture can be separated by sublimation.
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NaCl and Ca cl2
Is and water
Sand and Naphthalene
Blue and red inks
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Question # 13
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 # 14
Solubility of which substance decreases by increasing temperature.
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NaNO3
KNO2
NaCl
Ce2(SO4)3
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Question # 15
The molecule having zero dipole moment is.
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NH3
CHCl3
H2O
BF3
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Question # 16
In which of the following Paris, do the elements form a compound by sharing electrons.
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carbon and chlorine
Lithium and iodine
Neon and oxygen
Potassium ad bromine
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Question # 17
The paramagnetic behaviour of oxygen is well explaned on the basis of.
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M.O Theory
N.B Theory
VSEPR Theory
CF theory
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Question # 18
If an endothermic reaction is allowed to take place very rapidly in the air, the temperature of the surrounding air
Choose an answer
Remains constant
Increase
Decrease
Increase a bit
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