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Online Tests
Chemistry Fsc Part 1 Online Test MCQs With Answers
Question # 1
The gain of electron is known as.
Choose an answer
Oxidation
Reduction
Dehydration
Dehydrogenation
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Question # 2
Which of the following represents electronic configuration of the most electropositive elements
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He [ 2s
-1
]
Xe [6s
1
]
He [2s
2
]
Xe [6s
2
]
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Question # 3
The molecules of CO2 i dry ice form the.
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Ionic crystals
Molecular crystals
Amorphous
Covalent crystals
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Question # 4
Which molecules is 100% covalent
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H2
H2O
HF
NH3
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Question # 5
Maximum number of electrons in f-subshell is.
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2
6
10
14
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Question # 6
Dipole moment is defined as.
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Charge x distance
Charge x Debye
Charge x displacement
Charge x bond energy
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Question # 7
The pressure of oxygen inside the bomb calorimeter is.
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100 atm
50 atm
25 atm
20 atm
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Question # 8
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 # 9
Those elements whose electronegativities are 1.2 and 3.2, react to form
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Ionic bond
Covalent bond
Gaseous substance
Definiting a liquid substance
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Question # 10
The bond angle in NH3 molecule is
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109.5
o
107.5
o
104.5
o
106
o
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Question # 11
Which of the following elements in its crystalline form will have the lowest enthalpy change of vaporization
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Chlorine
Argon
Phosphorus
Silicon
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Question # 12
Solvent extraction is an equilibrium process and it is controlled by
Choose an answer
Law of mass action
The amount of solvent used
Distribution law
The amount of solute
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Question # 13
Which substance have delta E = Delta H and no pressure - volume work.
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Liquids only
Solids only
Gases only
Liquids and solids
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Question # 14
In which , case particles are separated from each other.
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Fusion
Condensation
Neutralizations
Vaporization
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Question # 15
At constant volume of a system remains constant and the heat is absorbed by the system, them amount of heat absorbed is called
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Enthaply change of the system
Internal energy change of the system
Total enthalphy of the system
Total internal energy of the system
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Question # 16
How many moles of CO are present having 12.04 x 10
23
molecules of CO2.
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0.5 mol
1.0 mol
1,5 mol
2.0 mol
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Question # 17
Which is not use of liquid crystals.
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Temperature sensor
Liquid crystal display
Skin thermography
Energy supply in electrical devices.
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Question # 18
Which of the following species has unpaired electrons in anti bonding molecular orbitals
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O2
N2
B2
F2
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