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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Which of the following is major sink for carbo monoxide.
Choose an answer
Water
Soil
Animal respiration
Salts dissolved in ocean water
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Question # 2
Aluminium reacts with boiling water to liberatedi hydrogen gas along with the formation of.
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Aluminium oxide
Aluminium hydroxide
Aluminium suboxide
Aluminium superoxide
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Question # 3
The osmotic pressure of a solution with definite composition.
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Varies directly as the volume and temperature.
Various inversely as the temperature.
Varies inversely as the volume and directly as the temperature.
None of the above
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Question # 4
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 # 5
Ozone layer of upper atmosphere is being destroyed by
Choose an answer
chlorofluorocarbons
SO2
Photochemical oxidants O2 and CO2
Smog
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Question # 6
Which of the following is a non degradable pollutant.
Choose an answer
Long chain phenoiics
DDT
Mercuric salts
All above
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Question # 7
Which of the following has the maximum ionic character.
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HF
HCl
HI
HBr
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Question # 8
Which of the following statements is not correct with the concept of Bronsted concept of acids and bases.
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An acid can donate a proton
A base can accept a proton
This concept has many bases that have OH- ions
This concept is more general
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Question # 9
Which of the halogens has lowest bond energy.
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Cl2
Br2
F2
I2
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Question # 10
The first ionization energies of the elements of the first transition series. (Ti _____ Cu)
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Increases as the atomic number increases
decreases as the atomic number increases
Do not show any change as the addition of electrons takes place in the inner (n-1) d -orbitals.
Increases from Ti to Mn and then decreases from Mn to Cu
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Question # 11
The expected specific waste fo petroleum industry is.
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Asphalt and tars
Paper
Cloth
Fibre
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Question # 12
HCIO4, HNO3 and HCL are all strong acids in aqueous solution inglacial acetic acid medium, their acid strength is such that.
Choose an answer
HCIO4 > HCL > HNO3
HNO3 > HCIO4 > HCl
HCl > HCIO4 > HNO3
HCl > HCIO4 > HNO3
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Question # 13
Which of the following is a component of soap.
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Sodium sulphate
Sodium stearate
Sodium chloride
Sodium bromide
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Question # 14
The noble gas used or treatment of cancer is
Choose an answer
Helium
Argon
Radon
Krypton
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Question # 15
The property measured in TGA is
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Change in weight
Rate of change in weight
Heat envolved and absorbed
Change of temperature.
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Question # 16
The phenomenon of x-ray diffraction was studied by
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Huygen
Bragg
Max Planck
None of above
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Question # 17
The process in which ore is heated generally in the absence of air, to expel water from a hydrated oxide at temperature below their melting points is called.
Choose an answer
calcination
Roasting
Froth floatation
Bessemerization
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Question # 18
Which one of the following elements shows the most stable oxidation state of +1
Choose an answer
AI
Ga
In
TI
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Question # 19
In the Lewis formula of which of the following species, the number of single double and dative bonds are equal
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N2O5
HNO3
SO2
SOCl2
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Question # 20
In 1952 who popularized the use of CFT for inorganic chemist
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Bethe
Orge
Van Vleck
Werner
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Question # 21
The Langmuir adsorption iso therrn shows that the amount of adsorbed gas per gram of the solid is equal to.
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ap/1+bp
ap+1/1-bp
1+ap/1-bp
a(1+bp)
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Question # 22
The electron gain enthalpy of chlorine is -349 Kj mol-1 ionization energy of Cl would be.
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-349 kJ mol -1
349 kJ mol-1
-698 kJ mol-1
698 kJ mol-1
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Question # 23
Metals are
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Transparent
Tranalucant
Opaque
None of above
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Question # 24
The soap and detergent are source of organic pollutants like.
Choose an answer
Glycerol
Polyphosphates
Sulphonated hydrocarbons
All of these
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Question # 25
Primary structure of protein refers to
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Amino acid sequence
Arrangement of peptide chains
Orientation of amino acids
Whether is has a or b helix in space structure.
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Question # 26
Which of the following has the highest melting point.
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NaCl
KCl
MgO
BaO
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Question # 27
Xe reacts directly with
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O2
Cl2
F2
Br2
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Question # 28
The process of determining amounts of each of the components in a sample of matter is termed as.
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Gravimetric analysis
Coulometric analysis
Quantitative analysis
Qualitative analysis
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Question # 29
__________ are the extensions of bucky balls.
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Goodesic domes
Hexagons
Carbon nanotubes
AFM and STM
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Question # 30
Ingold's isoprence rule states that in terpenoids isopren units are joined.
Choose an answer
Head to tail
Head to head
Tail to tail
In a random order
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Question # 31
CNG is stored under
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Power genertion
Electric Generators
Solvent
All of above
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