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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Which of the following is the second anciently known metal.
Choose an answer
Nickel
Copper
Gold
Silver
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Question # 2
XeF4 is obtained, when a mixture of Xenon and fluorine in the ratio is heated in a nickle vessel at 400
o
C
Choose an answer
1 : 3
5 :1
1 :20
1 :5
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Question # 3
Which of the following is branch chain polymer.
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Glycogen
Terylene
PVC
Orlen
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Question # 4
Which trihalide is not hydrolysed by water
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NF3
NCl3
PCl3
AsCl3
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Question # 5
Which of the following is an azo dye.
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Congo red
Rhodamine B
Ertythroein
Paraosaniline
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Question # 6
Detergents are known to pollute revers and water ways. However, detergents can be made biodegradable and pollution free by taking.
Choose an answer
cyclic hydrocarbon chain
Shorter hydrocarbon chain
Unbranched hydrocarbon chain
Benzenoid hydrocarbons
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Question # 7
Which of the following elements with excess oxygen to form proxides.
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Ca
Mg
Li
Ba
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Question # 8
Stable metal ions strictures are.
Choose an answer
Noble gas structure
Is electron group structure
Transition metal in structure
All of the above
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Question # 9
The polarity of bonds can lead to polarity of molecules and affect
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Melting point
Boiling point
Solubility
All of above
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Question # 10
Which of the following is the active ingredient in ordinary household bleach.
Choose an answer
HCl
Cl2
NaCl
NaCIO
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Question # 11
Used for sterilizationof drinking water
Choose an answer
F
Br
Cl
I
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Question # 12
Which of the following detector is used in GC analysis
Choose an answer
Thermal conductivity detector
Flame ionization detector
Mass spectrometer
All above
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Question # 13
The change in the concentration of the reactant of product per units time is called.
Choose an answer
Order of the reaction
Melecularity of the reaction
Rate of reaction
None of the above
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Question # 14
Which of the following is the correct order of interactions.
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Covalent < hydrogen bonding < Van Der Waal's < dipole -dipole
Van der Waal's < hydrogen bonding < dipole -dipole < covalent
Van der Waal's < dipole -dipole < hydrogen bonding < covalent
Dipole-dipole < Van der Waal's < hydrogen bonding < covalent
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Question # 15
Which of the following technique is useful to remove metal ions from an interfering matrix.
Choose an answer
Solvent extraction
Electrophorests
Cataphorests
Gel permeation
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Question # 16
The noble gases are found in the atmosphere to the extent of about some percent by volume.
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0.5%
1.0%
1.5%
2.0%
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Question # 17
The name hydrogen was proposed by.
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Lavoisier
Rutherford
Henry Cavandish
Scheele
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Question # 18
Which of the following statements is false about enantiomers.
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Rotate plane of polarized light
Are superimposable mirror images
Nbonsuperimposable mirror images
All of the above
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Question # 19
Which of the following statement is not true for carbon.
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Its forms compounds with multiple bonds
Its ionization energy is very high
It undergoes catanation
It shows inert pair effect
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Question # 20
Opticla tweezers
Choose an answer
Are used to remove facial hair with miniaturized laser beams
use light to manipulate particles as small as single atom
Are a nanotechnology bases tool for stamp collectors
Don't exist
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Question # 21
NH3 has a not dipole moment while BF3 has zero dipole moment Thsi is because.
Choose an answer
NH3 is not a planar molecule while BF3 is a planar molecule.
NH3 is a planar molecule, while BF3 is a planner molecule.
Fluorine is more electronetative than nitrogen
Born is more electronegative than nitrogen
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Question # 22
The diameter of fly ash particles is._________ micro meter
Choose an answer
5-10
10-20
20-30
100
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Question # 23
If steel is heated to a temperature well below red heated and is then cooled slowly the process is called.
Choose an answer
Annealing
Quenching
Tempering
Nitriding
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Question # 24
Which of the following process is not sorbent separation technolgy.
Choose an answer
Penex
Parex
Molex
Olex
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Question # 25
__________ are the extensions of bucky balls.
Choose an answer
Goodesic domes
Hexagons
Carbon nanotubes
AFM and STM
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Question # 26
The number used in cancer therapy is.
Choose an answer
Fe
Co
Ni
Rn
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Question # 27
Which of the following pollutants results from chemicals petroleum and paper industries.
Choose an answer
SO2
CO
Hydrocarbons
All above
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Question # 28
What group of steels are molybdenum high sped steels.
Choose an answer
Group A
Group D
Group M
Group H
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Question # 29
In order to give strength and elasticity natural rubber is heated with.
Choose an answer
Sulphur
Oxygen
Nitrogen
Chlorine
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Question # 30
Which of the following statement is not correct n respect of Arrhenius concept.
Choose an answer
The concept is applicable only for aqueous systems.
Neutralization takes place in aqueous mediam only
TH+ ion cannot remain as such in water
This concept is applicable for non aqueous system only.
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Question # 31
The state of hybridization of carbon in CO2 is
Choose an answer
sp2
sp
sp3
dsp2
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