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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Which is the strongest reducing agent.
Choose an answer
HF
HCl
HBr
HI
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Question # 2
One ppm solution of NaOH Contain 1000 mg of the solute per how much of the volume of the solution.
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1000 mL
100 mL
10 mL
1 mL
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Question # 3
Which of the following cast irons is a high carbon, iron carbon silicon alloy.
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Deorizers
Deoxidizers
Deoxifiers
Deterrent
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Question # 4
Non localised bonds are referred as
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Metallic bond
Long range bonds
Ionic bond
Covalent bonds
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Question # 5
In Dannis's method the end of the copper caps into which graphite electrode are fixed with cement.
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Portiant
Bakelite
Asbestos
All of above
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Question # 6
The element having highest ionization energy and least electron affinity belong to
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Period 1 , group 18
Period 2, group 17
Period 2, group 1
Period 2, group 2
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Question # 7
Which of the following allows charge transfer through the solution but prevents mixing of the solution.
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Anode
Cathode
Electrode cell
Salt bridge
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Question # 8
Which of the following should have the largest dipole moment.
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Carbon tetrachloride
Cis-stibeue
Trans-atibeue
Cis-dichlorocthylene
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Question # 9
The steroid which plays an important role in carbohydrate metabolism is.
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Oestrone
Progestrrone.
Androsterone
Cortisone
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Question # 10
Which of the following detector is used in HPLC system.
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Differential refractometer detector
UV detector
Diode array detector
All above
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Question # 11
Which of the following techniques is bulk technique.
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Powder XRD
Single Crystal XRD
SEM
TEM
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Question # 12
Which of the following radical is not a member of III group
Choose an answer
Al
3+
Fe
2+
Ca
2+
Fe
3+
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Question # 13
___________ surfactants perform well over a wide range of water hardness and pH.
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Anionic
Cationic
Nonionic
Neutral
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Question # 14
Which of the ionic possesses highest bond energy.
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C-C
Si -Si
Ge - Ge
Sn -Sn
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Question # 15
The point group of XeOF4 is.
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C6v
C4h
D4h
D2h
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Question # 16
Which one of the following is natural polymer.
Choose an answer
Starch
Nylon-6
Neoprene
Buna-S, SBR
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Question # 17
The first ionization energy in electron volts of nitrogen and oxygen atoms are respectively given by.
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14.6, 13.6
13.6, 14.6
13.6, 13.6
14.6, 14.6
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Question # 18
Which of the following is not a property of Cr.
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it is brilliant silvery metal
it is malleable
It can take very high polish
Its surface is tarnished easily
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Question # 19
The width of a carbon nano tube is.________ nm
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1
1.3
2.5
10
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Question # 20
Which of the following elements would have the lowest first ionization energy
Choose an answer
Mg
Rb
Li
Ca
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Question # 21
Which of the following process is not physical in nature.
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Mixing
Flocculation
Sedimentation
Activated sludge process
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Question # 22
What is the effect of aluminum in cast iron.
Choose an answer
To increase hardness above 0.5 %
To deoxidize molten cast iron
To affect machinability, ductility and shrinkage depending on form
Both A and B
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Question # 23
Zeigler Natta catalyst is.
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Pt/PtO
TiCl4/Al(C2H5)3
Pt/Rh
Pt
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Question # 24
The chrome vanadium steels contain how many percent of vanadium.
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0.15 to 0.30
0.05 to 0.15
0.30 to 0.45
0.45 to 0.60
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Question # 25
The gap between occupied and the unoccupied orbitals is not very large and the conduction of electricity is negligible at lower temperature and appreciable at high temperatures then it will be.
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Good conductor
Non conductor
Semi conductor
None of the above
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Question # 26
Which among the following is a false statement.
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SiO2 has a structure similar to that of CO2
Natural Si exists only in the combined state
Si can be prepared by reducing SiO2 with Mg
Si does not exist in graphite like structure, but exists only ni diamond like structure.
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Question # 27
The atomic orbitals are progressively filled in order of increasing energy. This statement is called as
Choose an answer
Hund's rule
Aufbau's rule
(n+1) rule
Planck's rule
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Question # 28
Equal volumes of all gases, under similar conditions of temperature and pressure, contain equal number of molecules. This is a statement of.
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Graham's law
Dalton's law
Avogadro' law
Boyle's law
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Question # 29
The correct order of thermal stabilities of hydriedes of group 15 is.
Choose an answer
NH3 > PH3 > AsH3 > BiH3> SbH3
NH3 > PH3 >AsH3 > SbH3> BiH3
NH3 < PH3 < SbH3 > AsH3 > BiH3
BiH3 > Sb H3 > AsH3 > PH3 > NH3
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Question # 30
Red brass contain about how many percent of zinc.
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20 %
15 %
30 %
25 %
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