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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Which of the following is capable of forming zwitter ion.
Choose an answer
Amino acids
Halo acids
Hydroxy acids
All of these
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Question # 2
A 10% solution of sucrose contains 10 g of sucrose in how much volume of the solution.
Choose an answer
10 mL
100 mL
1000 mL
1 mL
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Question # 3
Visible light is just a portion of radiation emitted by atoms.Which of the following statements is not related with visible light.
Choose an answer
visible light is electromagnetic in nature.
It travels with the speed of light
It is a mass
The wave number of light is directly proportional to its wave length.
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Question # 4
Ten elements Sc (Z = 21) to Zn (Z = 30) fill their 4s orbitals first and then 3d orbitals are called elements. of.
Choose an answer
3 d series.
4d Series
5d Series
None of above
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Question # 5
Peeling of ozone umbrella is due to.
Choose an answer
CFCa
PAN
CO2
Coal burning
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Question # 6
Red colour of glass of due to the presence of
Choose an answer
Cu2O
CoO
MnO2
CdS
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Question # 7
The valence shell electronic configuration of group III A is.
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ns1 p2
ns2 p1
ns3p2
ns2p2
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Question # 8
A device which is used to measure the interracial angle is known as
Choose an answer
Voltmeter
Potentiometer
pH Meter
Goniometer
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Question # 9
Beside the common silica based SPE particles, polymer supports are also available They have advantages over silica based SPE particles, Which of the following reason is possible.
Choose an answer
These are stable over a wide pH range.
These do not possesses residual silica groups
These are designed to be wettable and have high capacity than silica base particles.
All above
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Question # 10
The first noble gas compound was
Choose an answer
XeO3
XeF4
XeF6
Xe +[PtF6]
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Question # 11
Which of the following extractant is used to solid phase extraction
Choose an answer
Bonding of C18 chains on silica
Bonding of C20 on paper
Bonding of C18 on glass
Bonding of C20 on cellulose
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Question # 12
The penultimate shell of carbon contains electrons.
Choose an answer
s2
s2p6
s2p6d10
s2p6d8
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Question # 13
According to SHAB, Lewis acid are divided into.
Choose an answer
Two classes
Three classes
Four classes
None of above
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Question # 14
Ionic compounds in general possess both
Choose an answer
High melting point and non -directional bonds
High melting points and low boiling poinits
Directional bonds and low boiling points
High solubility in polar and non -polar bonds.
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Question # 15
Which of the following elements has the highest value of IE.
Choose an answer
Na
K
Mg
Ca
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Question # 16
Which of the following statement is not relevant with nitrous oxide.
Choose an answer
It is a colorless and odourless gas
It is non toxic gas
It is present in the atmosphere in higher concentration
It has high reactivity in the lower atmosphere
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Question # 17
The IUPAC name of C2H3, CO , OC OC2H5 in
Choose an answer
Prepanoic anhydride
Ethanoic anhydride
Diketoethoxy ether
None of the above
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Question # 18
What is the function of Head Box in paper making machine.
Choose an answer
It dry the paper
It reduces thickness of paper
It makes the surface of paper smooth
It discharge the pulp at the screen of fourdrinier table
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Question # 19
Which of the following is not adsorptive separation process.
Choose an answer
Parex
Olex
Penex
None of these
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Question # 20
The expression of specific conductance is given by
Choose an answer
Ls= I/R , l/A
Ls = L I/A
Ls = I/L , A/l
LS = r l/A
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Question # 21
The pH of milk is
Choose an answer
6.0
6.5
7.0
7.5
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Question # 22
The most important problem regarding nano chemistry
Choose an answer
Elucidation of relationship between also and chemical reactivity of particle
Determination of size of particle
Determination of reactivity of particle
Determination of physical properties of nano particles.
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Question # 23
Which of the following is not a correct postulate of the kinetic theory of gases.
Choose an answer
The molecules are in random motion
The gaseous collisions are perfectly elastic
The average kinetic energies of different gases are equal at a particular temperature.
The pressure exerted on the walls of the container is due to inter molecular forces.
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Question # 24
Which of the following represents the correct order of ionic radii
Choose an answer
La+ < Na+ < K+ < Rb+
Li+ > Na + > K+ >Rb+
Li = Na + = K+ = Rb+
Rb +> Na+> K+ > Li+
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Question # 25
The IUPAC suffix used for ______ NC group is
Choose an answer
Cyanide
Isocyanides
Carbylamines
Nitrite
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Question # 26
Nano technology in other words is.
Choose an answer
Carbon engineering
Atomic engineering
Small technology
Microphysics
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Question # 27
1-Butyne on oxymereuration -demercuration would give.
Choose an answer
Butanone
Butanal
Propanol and methanol
Propanoic acid and formic acid
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Question # 28
What is the most common alloying ingredient in copper?
Choose an answer
Brass
Zinc
Cobalt
Nickle
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Question # 29
When rain is accompanied by a thunderstorm, the collected rain water will have pH
Choose an answer
Slightly lower than that of rain water without thunderatorm
Slightly higher than that of rain water without thunderastorm
Uninfluenced by occurrence of thunderatorm
Which depends on amount of dust in air
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Question # 30
An sp3 hybrid orbital contains
Choose an answer
1/4 a character
1/2 a character
2/3 a character
3/4 a character
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Question # 31
A molecule MX4 has a square planar shape, The number of non bonding pairs of electrons around M is .
Choose an answer
2
1
0
3
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