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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Which of the following ahs non zero dipole moment.
Choose an answer
NH3
SF6
BF3
CO2
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Question # 2
20 micron =____________________ nm
Choose an answer
20 x10
-9
20000
200
20x10
9
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Question # 3
Gold dissolves in aqua regia forming
Choose an answer
AuCl
Au(NO3)3
AuCl3
HAuCl4
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Question # 4
Which of the following phenomena is not explained by the classical mechanics.
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Black body radiation
Photoelectric effect
Atomic and molecular spectra
Heat capacities of solids
All of the above
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Question # 5
Titanium dioxide shows the lattice strcuture.
Choose an answer
Flluorite
Rutile
Wurtzite
Zeolite
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Question # 6
__________ is used for fruits, vegetables and tobacco
Choose an answer
Potassium Chloride
Potassium Sulphate
Potassium nitraite
All above
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Question # 7
The suffix "ate" at the end of the name of the compiled signifies that it is.
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Cation
Anion
Neutral
None of above
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Question # 8
The reduction in ozone layer would lead to
Choose an answer
Temperature chages
Rainfall failure
Increase uv radiation on earth
All above
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Question # 9
The units of surface tension in SI system are
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Joule m-1
Newton m-1
Erg cm-1
Dynes cm-2
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Question # 10
Monomer of Nylon -6 is
Choose an answer
Adipic acid
Hexamethylenediamine
Caprolactam
All of these
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Question # 11
Which of the following solution would have the largest depression in freezing point.
Choose an answer
1% glucose
1 % KCl
1 % AlCl3
1 % BaCl2
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Question # 12
1 nanometre =___________ cm
Choose an answer
10
-9
10
-8
10
-7
10
-6
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Question # 13
The number of Glass products now manufactured is.
Choose an answer
25,000
75,000
50,000
All of these
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Question # 14
Peeling of ozone umbrella is due to.
Choose an answer
CFCa
PAN
CO2
Coal burning
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Question # 15
Which of the following represents the correct order of ionic radii
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La+ < Na+ < K+ < Rb+
Li+ > Na + > K+ >Rb+
Li = Na + = K+ = Rb+
Rb +> Na+> K+ > Li+
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Question # 16
Which of the following represent the fuming sulphuric acid
Choose an answer
H2S2O4
H2S2O3
H2S2O6
H2S2O7
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Question # 17
The formula of hexa borane is.
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B4H10
B6 H10
B5 H9
B8 H12
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Question # 18
The first ionization energies of the elements of the first transition series. (Ti _____ Cu)
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Increases as the atomic number increases
decreases as the atomic number increases
Do not show any change as the addition of electrons takes place in the inner (n-1) d -orbitals.
Increases from Ti to Mn and then decreases from Mn to Cu
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Question # 19
The vapours attacks the eyes and mucous membrane of nose and throat
Choose an answer
F
Cl
I
Br
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Question # 20
Which of the following statement is not relat4ed wiht SO2
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It is a colourless gas
It has sharp and pungent odour
It is moderately soluble in water
It is reduced slowly in clear air to H2S
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Question # 21
The different types of glass are.
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A- glass, C-Glass, E-Glass and S-Glass
A-Glass, B-Glass, E-Glass, S-Glass
AR -Glass, C-Glass, E-Glass and S -Glass
A-B Glass
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Question # 22
Which of the following steps in involved in the metallurgy of aluminium.
Choose an answer
Purification of bauxite
Electrolytic reduction of alumina
Refining of aluminum
All above
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Question # 23
A system which can exchange energy as well as natter with its surrounding is said to be a/an
Choose an answer
Closed system
Inert system
Open system
All of above
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Question # 24
A minor constant is one whose amount in the sample is
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0.1 to 1 %
0.01 to 1%
1 to 10%
None of the above
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Question # 25
Which of the following is not a characteristic of covalent compound.
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They have low melting and boiling points.
They ionize on dissolution in polar solvents
Their molecules have definite geometry
They are generally insoluble in water
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Question # 26
The light absorbed in UV and visible region causes.
Choose an answer
Vibrational energy changes
Rotational energy changes
Electronic excitation
All of these
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Question # 27
In which pair of species, the Lewis formula contain same number of Lone pairs and bond pairs but they are not iso electronci.
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O2 B2
SO2, O3
PCl3, BF3
SOCl2, COCl2
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Question # 28
HCIO evolves Cl2 and O2 when dissolve
Choose an answer
Ca
Ni
Cu
Any of above
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Question # 29
Which of the following is capable of shown g optical isomersm.
Choose an answer
CH3COCOOH
CH3CHOHCOOH
Botha a and b
All of these
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Question # 30
Soap and detergent remove the direct form clothes due to.
Choose an answer
Osmosis
Gravity
Lowering of interfacial tension
Diffusion
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Question # 31
The most stable oxidation state shown by lead is.
Choose an answer
+2 , +4
+2 only
+3 , +4
+4 only
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