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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Among the unit cells given below, which has the highest symmetry
Choose an answer
Monoclinic
Cubic
Hexagonal
Orthorhombic
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Question # 2
In biological ecosystem which of the following substance is used by organisms.
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Water
Sunlight
Minerals
All above
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Question # 3
Oxytocin, a pituitary hormone to
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Amino acid
Polypeptide
Protein
Conjugated protein
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Question # 4
The tyndall effect is not observed in
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Suspensions
Emulsions
Colloidal solutions
True solutions
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Question # 5
Which of the following is renewable energy source.
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Moon
Wind
Sun
Ocean
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Question # 6
Which of the following statement is not related to BVT
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individual orbitals lose their indention
VBT uses the concept of resonance
VBT does not explain the paramanhetic nature of molecule
it uses only valence electron
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Question # 7
An indicator for an acid base titration is a
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Weak acid
Weak base
Strong acid
Strong base
Both A and B
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Question # 8
Which halide of cesium will be highly ionic in nature.
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K+
Ag+
Rb+
Ca+
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Question # 9
Which of the following is not strong electrolytes.
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HCl
H2SO4
HNO3
CH3COOH
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Question # 10
According to R, S system the correct order of priority of the following groups is .
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-CH2OH > - CHO > ----- COOH
-COOH > ------CHO > ------CH2OH
---- CH2OH -----> - COOH > -------CHO
--- COOH > - CH2OH >----- CHO
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Question # 11
Which of the following is not a component of hollow cathode lamp.
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Anode
Cathode
Filter gas
Atomic vapour
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Question # 12
The stabilization of the dispersed phase in a lyophobic sol is due to
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Liking for the dispersion medium
The surface tension of the medium
The formation of an electrical layer between the two phases
The viscosity of the medium
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Question # 13
According to SHAB, Lewis acid are divided into.
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Two classes
Three classes
Four classes
None of above
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Question # 14
Homolytic fission of convalent bond results in the formation of.
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Free redicals
Carbocations
Carbonions
Both B and C
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Question # 15
Which of the following pair on aldol condensation followed by dehydration gives methyl vinyl ketone.
Choose an answer
HCHO and CH3COCH3
HCHO and CH3CHO
CH3CHO and CH3CHO
CH3COCH3 and CH3COCH3
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Question # 16
A colloidal system in which both the dispersion phase and dispersed phase are liquid is.
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Smoke
Emulsion
Whipped cream
Mist
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Question # 17
The concentration required to give a signal equal to three times the standard deviation of the baseline is called.
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Sensitivity
Detection limit
Signal to noise ratio
None of the above
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Question # 18
A mixture containing S2- and SO4 ions on trating with dil HCl will produce
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H2S gas
SO2 gas
H2S and SO2 gas
CO
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Question # 19
Copper is mainly extracted from witch of the following ore
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Sulphide ores
Carbonate ores
Oxides ores
Non sulphide ores
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Question # 20
When a solute is dissolved in two immiscible solvents it will distributes itself between two phases and the ratio of the concentration of the solute in two phases will be constant, This is known as.
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Starke law
Distribution law
Equilibrium law
Snell's law
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Question # 21
The shape of SO
4
2-
ion is.
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Tetrahedral
Trigonal planar
Square planar
Octahedral
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Question # 22
The main active contaminants of nuclear reactors are.
Choose an answer
Co- 60
Mn -54
Sr-60
All above
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Question # 23
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 # 24
The electrolytic method super passes all other methods due to.
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Furity
Cheapness
Easy available
All above
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Question # 25
The principal ores of copper are
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Copper sulphides
Copper oxides
Both sulphides and oxides
Copper carbonate
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Question # 26
Which of the following technique is not related to instrumental analysis.
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Optical method
Colorimetry
Polarography
Gravimetric analysis
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Question # 27
Which of the following term is not used in pulping.
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Kappa number
Copper number
Bromine Number
Octane Number
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Question # 28
The decreasing order of the second ionization energies of K, Ca and Ba is
Choose an answer
K > Ca > Ba
Ca > Ba > K
Ba > K > Ca
K > Ba > Ca
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Question # 29
Group IV A consist elements.
Choose an answer
3
4
5
6
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Question # 30
At high temperature nitrogen combines with calcium carbide to give
Choose an answer
Calcium cyanide
Calcium cyanamide
Calcium nitride
Calcium cabonate
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Question # 31
Which of the following expression is correct.
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C = n/RT
C = RT/n
RT = Cn
Cn = 1/RT
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