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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Pick out the incorrect statement regarding ozone.
Choose an answer
O3 is an unstbale dark blue diamagnetic gas
The central oxygen in O3 is sp3 hybridized
It cause the tailing of mercury
It does not react with KOH
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Question # 2
__________ is used for fruits, vegetables and tobacco
Choose an answer
Potassium Chloride
Potassium Sulphate
Potassium nitraite
All above
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Question # 3
Commercial detergents contain mainly ___________
Choose an answer
RCOON
RONa
RSNa
All above
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Question # 4
Ionic bond are also forces called as.
Choose an answer
Polar bond
Electrovalent bond
None polar bond
Both A and B
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Question # 5
All the halogen form oxyacide, except
Choose an answer
Florine
Chlorine
Bromine
Iodine
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Question # 6
The volume of given mass of gas at constant pressure is directly proportional to the absolute temperature.This is a statement of.
Choose an answer
Charles's law
Boyle's law
Avogadro's law
Dalton's law
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Question # 7
Which of the following metal ion cannot be catimated by gravimetric analysis.
Choose an answer
K+
Ca
2+
Al3+
Zn2+
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Question # 8
Alnico is an alloy containing how many percent nickel.
Choose an answer
10%
14%
18%
22%
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Question # 9
Which of the following device is used to measure the surface tension.
Choose an answer
Polarimeter
Viscometer
Refractometer
Stalagnameter
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Question # 10
The H2SO4 obtained by the contact process having purity
Choose an answer
70%
74%
78%
82%
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Question # 11
Select an acidic amino acid
Choose an answer
Lysine
Cystine
Aspartic acid
Aminoacetic acid
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Question # 12
Iodine is a grey black solid and its vapours are in color
Choose an answer
Grey
Black
Yellow
Violet
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Question # 13
The property associated in thermometric tittration is
Choose an answer
Change in weight
Rate of change in weight
Heat evolved or absorbed
Change in temperature
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Question # 14
In DTA , theriac effect may be exothermic of endothermic These are cause by
Choose an answer
Fusion
Crystal structure inversion
Destruction of crystal lattice
All of above
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Question # 15
How many oxygen atoms lined up in a now would fit in a one nanometer speace.
Choose an answer
None an oxygen atoms is bigger than 1 nm
One
Seven
None of the above
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Question # 16
The intensity of magnetization produced per unit strength of the applied magnetic field is called magnetic susceptibility., which of the following statements is not related with this phenomenon.
Choose an answer
Confirmation of structure of given compound
Complex storeochemistry
Diamagnetic nature of molecules
Paramagnetic nature of molecules.
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Question # 17
Which is the second most abundant element occurring the earth crust.
Choose an answer
Iron
Cu
Cr
Ni
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Question # 18
Which of the following is atmospheric pollutant.
Choose an answer
CO2
CO
O2
N2
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Question # 19
In diborane (B2H6)
Choose an answer
The structure is similar to that of C2H6
All the atoms are in one plane
The born atoms are linked through hydrogen bridges
There is a direct boron boron bond
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Question # 20
The reaction of toluene with chlorine in the presence of light gives.
Choose an answer
Benzoyl chloride
Benzyl chloride
m-chlorotoluene
Mixture of 0 and p -chlorotoluene
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Question # 21
Lime water is an aqueous solution of.
Choose an answer
MgSO4
Ca (OH)2
CaCO3
CaSO4
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Question # 22
The percentage of nitrogen in urea is.
Choose an answer
36%
46%
55%
65%
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Question # 23
Which of the following process is used for the removal of particulates.
Choose an answer
Wet removal by precipitation
Sedimentation
Diffusion and impaction
All above
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Question # 24
The electronic configuration of sodium (Z=11)
Choose an answer
1s2, 2s2, 2p4
1s2, 2s2, 2p6, 3s2 , 2p5
1s2, 2s2, 2p6, 3s1
1s2, 2s2, 2p6, 3s2
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Question # 25
A high frequency sound has frequency
Choose an answer
100 Hz
200 HZ
300 Hz
500 Hz
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Question # 26
The IUPAC name of C2(CN)3 is
Choose an answer
2,3-dicvano butanedinitrile
2,3 -dicyano -2- butenedinitrile
1,1,2,2-tetrcyanoethane
1,1,2,2, tetracyanocthenc
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Question # 27
The suffix "ate" at the end of the name of the compiled signifies that it is.
Choose an answer
Cation
Anion
Neutral
None of above
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Question # 28
The main constituents of ___________ are boron oxide and silica.
Choose an answer
Pyrex glass
Low silica glass
Soda lime glass
Super hard glass
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Question # 29
The increasing order of energies of various sub shells is
Choose an answer
1s < 2s<3s<2p<3p<4s<3d
1s <2s<2p<3s<3p<4s<3d
1s>2s>2p>3s>3p>4s>3d
1s>2s>2p>3p>3d>4s
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Question # 30
Which of the following anionic species is not separated by gravimetric analysis.
Choose an answer
Cl-
SO4
CH3COO-
PO4
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Question # 31
In average composition of a good sample of cement the percentage of silica is.
Choose an answer
18.5%
20.5%
22.5%
24.5%
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