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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
___________ surfactants perform well over a wide range of water hardness and pH.
Choose an answer
Anionic
Cationic
Nonionic
Neutral
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Question # 2
Granulated sugar contains _____________% sucrose
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80
99.30
60
90
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Question # 3
DTA is of great importance in which of the following field
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Ceramic
Metallurgy
Mineralogy
All
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Question # 4
in the system of designating wrought aluminum alloys the letter F that follows the number indicates what condition of the alloy.
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As fabricated
Calcined
Annealed
Strain hardened
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Question # 5
Select the major product obtained from the addition HBr to 1-methyl cyclohexene.
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1- bromo -2- methyl cyclohexane
6- bromo-1- methyl cyclohex - 1- ene
3- bromo-1- methyl cyclohex -1- ene
1- bromo-1- methyl cyclohexane
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Question # 6
Zero group elements are called as
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Inert gases
Rare gases
Noble gases
All of above
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Question # 7
Which of the following is the second anciently known metal.
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Nickel
Copper
Gold
Silver
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Question # 8
During the preparation of ethane by Kolbe's electrolytic method using inert electrodes the pH of the electrolyte.
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Increases progressively as the reaction proceeds
Decreases progressively as the reaction proceeds
Remains constant throughout the reaction
May decrease if the concentration of the electrolyte is not very high
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Question # 9
Aromatic amine (X) was treated with alcoholic potash and another compound (Y) when foul smelling gas was formed with formula C2H3N (Y) was formed by reacting a compound (Z) with Cl2 in the presence of slaked lime . The compound (Z) is
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C6H5NC
CHCl3
CH3CH2OH
C6H5NH2
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Question # 10
An example of cyclic polyterpenoid is
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Myrcene
Alcoholic
Synthetic rubber
Natural rubber
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Question # 11
Which of the following is a natural polymer
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Nylon
Leucite
Cellulose
Polystyrene
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Question # 12
Are used as water repellents
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Carbides
Silicon
Silicones
Silicates
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Question # 13
When two bodies have equality of temperature with a 3rd body they in turn have equality of temperature with each other. This is a statement of.
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First law of thermodynamics
Zeroth law of thermodynamics
Second law of thermodynamics
Third law of thermodynamics
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Question # 14
Which of the following impurities are present with the bauxite.
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Silica
Ferric oxide
Alumina
Both silica and ferric oxide
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Question # 15
The terpenoid responsible fo the smell
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Camphor
Genenial
Citral
Carvone
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Question # 16
For a given mass of a gas at constant temperature, if the value V becomes a times, the pressure will become.
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3P
P/3
9P
3P/T
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Question # 17
Electron affinities of halogens are in the order.
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F > Cl > Br > I
Cl > F > Br > I
Cl > Br > I > F
Cl > Br > F > I
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Question # 18
The pH of the 1.3 x 10
-4
NH
4
Cl is
Choose an answer
1.3
4.0
2.886
3.886
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Question # 19
Potassium crystallizes in a body centered lattice. Hence, the coordination number of potassium in potassium metal is.
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4
6
8
12
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Question # 20
Which ratio decides the efficiency nano substance.
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Weight /volume
Surface area/volume
Volume/weight
Pressure/volume
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Question # 21
The relative populations of gourd state and excited state populations at a given flame temperature can be estimated using.
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Boltzmann distribution law
Maxwell law
Lambertie law
Beer's law
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Question # 22
The following oxo acids have been arranged in the order decreasir acid strength identify the correct order.
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III > IV > II > I
III > II > I >IV
I > II >III > IV
IV > III > II > I
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Question # 23
Glucose and fructose react with which of the following reagent to give same product.
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Tollen's reagent
Phenyl hydrazine
Hydroxyl amine
All of these
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Question # 24
Which of the following process is used for the removal of particulates.
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Wet removal by precipitation
Sedimentation
Diffusion and impaction
All above
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Question # 25
Concentrated aqueous sodium hydroxide can separate a mixture of.
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Al3+ and Sn2+
Al3+ and Fe3+
Al3+ and Zn2+
Zn2+ and Pb2+
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Question # 26
A catalyst
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Actually participates in the reaction
Changes the equilibrium concentration of the products
Does not affect a reaction energy path
Always decreases the rate for a reaction
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Question # 27
Metallic magnesium is obtained by
Choose an answer
Reduction of MgO with Coke
Electrolysis of an aqueous solution of MgCl2
Electrolysis of molten MgCl2
Displacement of magnesium by iron form MgCl2 solution.
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Question # 28
The one in which the acceptor atom is of low positive charge, Large size and has several outer electrons which can be easily excited is a.
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Soft base
Hard Base
Soft acid
Hard acid
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Question # 29
With which one of the following configurations, the lowest value of first IE is associated.
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Is2, 2s2, 2p6, 3s1
1s2, 2s2, 2p5
1s2, 2s2, 2p6
1s2, 2s2, 2p6, 3s2, 3p2
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Question # 30
Which of the following term refers to nearness between several measurements of the same quantity.
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Accuracy
Precision
Standard error
Standard error of mean
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Question # 31
Monomers are Teflon is
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Monochloroethene
1,2- Difluoroethene
1,1,2- Trifluoroethene
Tetrafluoroethene
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