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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Which of the following is an acceptable value fo the molecularity.
Choose an answer
0
2
6
3/2
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Question # 2
Give violet colour to flame
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Gallium
indium
Thallium
Aluminium
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Question # 3
Which of the following health effect is caused by lead.
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Cancer
Neurotoxin
Hypertension
Kidney damage
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Question # 4
Bioconversion of biomass can be used for.
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Heating purposes
Power production
Methane production
All of the above
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Question # 5
Zinc oxide is.
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A basic oxide
An amphoteric oxide
An acidic oxide
A neutral oxide
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Question # 6
AI Cl3 acts as a strong Lewis acid, because it is.
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A covalent compound
Readily hydrolyzed
Electron deficient
An ionic compound
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Question # 7
A pH of a neutral solution at 100
o
C when Kw = 1.0 x 10
-12
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0
7
6
7
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Question # 8
Fish die in water bodies polluted by sewage due to.
Choose an answer
Pathogens
Clogging of gills by silt
Reduction in dissolved oxygen
Foul smell
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Question # 9
The basic strength of hydrides of group 15 elements very in the following order.
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NH3 > PH3 > AsH3 > SbH3 >BiH3
PH3 > NH3 > AsH3> SbH3 > BiH3
BiH3> NH3 >PH3 > AsH3 > SbH3
NH3 > PH3 > SbH3 > AsH3 > BiH3
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Question # 10
Noble gases are sparingly soluble in water owing to.
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Dipole -dipole interactions
Dipole -induced dipole interactions
Hydrogen bonding
Induced dipole -instantaneous dipole interactions
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Question # 11
Which of the following gas is not used as carrier gas in GC.
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Argon
Nitrogen
Helium
CO2
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Question # 12
Carbon and Hydrogen are estimated by
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Liebig's method
Kjeldhal's method
Carries method
None of the above
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Question # 13
Gold dissolves in aqua regia forming
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AuCl
Au(NO3)3
AuCl3
HAuCl4
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Question # 14
Lother Meyer plotted a graph showing variation of.
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Atomic volume with increase in atomic number
Atomic volume with increase in atomic weight
Atomic redii with increase in atomic weight.
Atomic weight which increase in atomic number
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Question # 15
Which of the following statement is not correct with respect to radioactive pollutnats.
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Carcinoma and breast cancer
Leukemia
Increases biological immune system
Somatic and generic disorder
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Question # 16
The emission of light characteristics of metal and correlation of intensity of the light emitted with concentration of that metal forms the basis of.
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Roman spectroscopy
IR spectroscopy
Flame photometry
Rotational spectroscopy
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Question # 17
J.J. Thomson established certain properties about cathode rays. Which of the following is not related to cathode rays.
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Cathode rays from a gas discharge tube consists of negatively charged particles
Cathode rays are called electrons.
The e/m ratio of cathode rays depends on the gas inside
Cathode rays are affected by electric and magnetic fields.
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Question # 18
What element is the most abundant by mass in the Earth's crust.
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Fe
H
O
K
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Question # 19
What is a process for making glass reinforced shapes that can be general by polling resin impregnated glass stands though a die.
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Continuous pultrusion
Bulk molding
Vacuum bag forming
Computational analysis
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Question # 20
Which of the following item is not symmetry element.
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Pllane of symmetry
Inversion centre
Improper rotation
Optical activity
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Question # 21
Organic farming is the technique of raising crops through uses of.
Choose an answer
Manures
Biofertilizers
Resistant varieties
All of these
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Question # 22
The flow of solvent into a solution when two are separated by a semi -permeable membrane is called.
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Mixing
Effusion
Diffusion
Osmosis
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Question # 23
The aluminium alloy used to make parts of aircrafts is.
Choose an answer
Magnalium
Aluminium bronze
Duralumin
All of the these
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Question # 24
At higher altitudes, the boiling point of water is lowered because.
Choose an answer
Atmospheric pressure is low
Temperature is low at high altitude
Atmospherics pressure increase
None of the above
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Question # 25
Select a basic amino acid.
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Glycine
Cystine
Alanine
Lysine
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Question # 26
Which of the following is strongest reducing agent.
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Be
Mg
Ca
Sr
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Question # 27
Iso-osmotic solutions are those which have the same.
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Vapour pressure lowering
Osmotic pressure
Molality
Boiling point elevation
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Question # 28
How many stereoisomers are possible for CH3CH = CHCHCH(Br) CH3
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2- geometrical isomers
2- optical isomers
2- geometricla nad 2- optical isomers
2- geometrical and 1 optical isomers
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Question # 29
Which of the following characteristics of adsorption is wrong.
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Adsorptoin on solids is reversible in nature
Adsorption, in general increase with increase in temperature.
Adsorption is generally selective in nature.
Both enthalpy and entropy of adsorption are negative
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Question # 30
According to Arrhenius theory an acid is defined as substance which
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Accepts and electron pair
Donatees H+ ion in ammonia
Contains Cl- ions
Furnishes H3O + ion in water
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Question # 31
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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