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Online Tests
Chemistry Fsc Part 1 Online Test MCQs With Answers
Question # 1
The nature of bond in diamond is
Choose an answer
Electrovalent
Metallic
Coordinate covalent
Covalent
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Question # 2
Which of the following has bond angle of 120
o
Choose an answer
BeCl2
BF3
CH4
NH3
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Question # 3
Which of the following wave properties is inversely proportional to the energy for electromagnetic radiations
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Frequency
Wave number
Velocity
Wave length
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Question # 4
Rutherford's model fo atom failed because
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The atom did not have a nucleus and electrons.
It did not account for the attraction between protons and neutrons.
It did not account for the stability of the atom
Their is actually no space between the nucleus and the electrons.
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Question # 5
Maximum number of electrons in f-subshell is.
Choose an answer
2
6
10
14
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Question # 6
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Question # 7
The mass of alpha particle is equal to.
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Four times the mass of one proton
That of one hydrogen atom
That of one electron
That of one proton
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Question # 8
In which de excitation of electron of hydrogen atom maximum energy is relaeased.
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From n2 to n1
From n3 to n2
From na to n1
From na to n2
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Question # 9
The change in heat energy of a chemical reaction at constant temperature and pressure is called
Choose an answer
Enthalpy change
Bond energy
Heat of sublimation
Internal energy change
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Question # 10
Gas molecules show more deviation from ideal behaviour at high pressure because.
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Velocity of molecules increases
Velocity of molecules decreases
Force of attraction between molecules increases
Force of collision per unit area increases
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Question # 11
If fluted fitter paper, rate of filtration increases as compared tot he cone shaped filter paper because.
Choose an answer
It has greater number of holes in it.
It has greater surface are of filtration
Fluted filter paper has greater pore sizes than cone shaped filter paper.
Thickness of paper is more than cone shaped filter paper
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Question # 12
The sum of all kinds of energies of atoms, ions or molecules of a system is known as.
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Kinetic energy
Potential energy
Internal energy
Solar energy
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Question # 13
Isotopes are the atoms of same element with similar chemical properties but different
Choose an answer
Atomic number
Atomic volume
Atomic weight
Atomic structure
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Question # 14
The distillation of a solution under reduced pressure is called
Choose an answer
Fractional distillation
Destructive distillation
Distillation
Vacuum distillation
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Question # 15
The cathodic reaction in the electrolysis of dil H2SO4 with Pt electrodes is.
Choose an answer
Reduction
Oxidation
Both oxidation or reduction
Neither oxidation nor raduction
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Question # 16
Which one of the following inter molecular forces are present in neon gas molecules.
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Hydrogen bond
dipole -Dipole attraction
London dispersion force
Hydrogen bonding and London dispersion force
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Question # 17
The number of H2O molecules in 9 grams of ice is
Choose an answer
3.01 x 10
23
6.02 x 10
23
6.02 x 10
8
12.04 x 10
23
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Question # 18
If an endothermic reaction is allowed to take place very rapidly i the air, the temperature fo the surrounding air.
Choose an answer
Remains constant
Increase
Decrease
Remain unchanged
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