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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
The common host compound for the formation of inclusion compound is.
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Urea
Thiourea
Cholic acid
All above
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Question # 2
A terpenoid which as an alcoholic group in the molecule is
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Citral
Camphor
Menthol
Carvone
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Question # 3
In each period the element with lest electron affinity belongs to.
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Group 1
Group 14
Group 17
Group 18
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Question # 4
Buffer solution are used to.
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Increase the pH
Resist the pH
Decrease the pH
None of above
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Question # 5
Potassium sulphate with 48% to 52% potash, is made from.
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Potassium phosphate
Potassium Chloride
Potassium Nitrate
None of these
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Question # 6
Nano particles may interact with the support to be.
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Partially oxidized
Partically reduced
Both a and b
None
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Question # 7
Which of the following salt is green in colour
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Mn salt
Cr salt
Co salt
Ba salt
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Question # 8
The electrolysis of molten metal hydride will produce dihydrogen gas.
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At cathode
At anode
At both the electrodes
At none of the electrodes
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Question # 9
Acid rain is caused due to increase in the concentration of _______ in the atmosphere
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Ozone and dust
CO2 and CO
SO3 and CO
SO2 and NO2
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Question # 10
Which type of the coal preferred for metallurgical coal.
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Lignite
Peat
Bituminous coal
None of these
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Question # 11
Which of the following will be most effective int he coagulntion of
Fe (OH)3 sol.
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NaCl
MgSO4
AlCl3
Mg3 (PO4)2
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Question # 12
Law of octaves was proposed by
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Lother meyer
D.I.Mendeleev
J.A.R. Newlands
J.W. Dobereiner
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Question # 13
Homolytic fission of convalent bond results in the formation of.
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Free redicals
Carbocations
Carbonions
Both B and C
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Question # 14
Conductometry is based on
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Electric current
Electrical potential
Absorbance
Electrical conductance
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Question # 15
Aluminium halides is.
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White crystalline solid
Hygroscopic
Sublimes at 180
o
C
All above
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Question # 16
Non localised bonds are referred as
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Metallic bond
Long range bonds
Ionic bond
Covalent bonds
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Question # 17
Rectified spirit obtained by formentation contains 5% of water .So in order to remove it, rectified spirit is mixed with suitable quantity of benzene and heated Benzene helps because.
Choose an answer
It is dehydreating agent and so removes water
It forms the loweer layer which retains all the water so that alcohol can be distilled off
It form an azeotropic mixture having high boiling point and thus allows the alcohol to distall over
It forms low boiling azeotropic mixture which distille over leaving behind pure alcohol which can than be distilled.
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Question # 18
Is a peroxy acid
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H2SO5
H2S2O6
H2SO4
H2S2O7
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Question # 19
In compressive strength of a nanotube ______ its tensile strength.
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I less than
Is greater than
Is equal to
Less than or equal to.
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Question # 20
Which of the following elements has the highest ionization energy.
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Na
Si
Ar
Cl
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Question # 21
The following alloys are the chief alloys that are die cast except.
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Zinc alloys
Magnesium alloys
Manganese alloys
Nickel alloys
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Question # 22
Which of the following detector is used for compounds containing electronegative atoms.
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Mass specdtrometer
ECD
TCD
UV-detector
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Question # 23
Which of the following has the highest lattice energy
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LiCl
NaCl
KCl
CaCl
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Question # 24
Which of the following interaction is involved in solid phase extraction technique.
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Van der Waals forces
Dipolar attraction
H bonding
All of above
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Question # 25
Organic substance responsible for the smell of the Flowers etc are grouped together in chemistry as.
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Perfumes
Terphenoids
Flavonoids
Alkaloids
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Question # 26
Silicon bronze contains how many percent of silicon.
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96%
3%
1 %
69 %
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Question # 27
Dry ice is
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Solid CO
Solid CO2
Solid NH3
Solid SO2
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Question # 28
Lactic acid is a molecule which shows
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Epimersim
Tautomerism
Opical isomerism
Metamerism
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Question # 29
While compacting the concrete by a mechanical vibrator, the slump should not exceed.
Choose an answer
2.5 cm
10 cm
3.1 cm
5.0 cm
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Question # 30
In the metallurgy of iron, when limestone is added to the blast furnace, the calcium ion ends up in.
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Slag
Gangue
Metallic calcium
Calcium carbonate
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Question # 31
Chlorine when attached to benzene has
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+1 and + R effect
-1 and - R effect
-1 and +R effect
None of the above
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