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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
The Lewis structure of which of the following does not have coordinate bond.
Choose an answer
SO2
HNO3
H2SO4
HNO2
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Question # 2
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 # 3
The number of degree freedom at the triple point for the water system in.
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One
Two
Three
Zero
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Question # 4
The velocity possessed by maximum fraction of molecules at a given temperature is called.
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Average velocity
Root mean aquare velocity
Most probable velocity
None of the above
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Question # 5
Which of the following statements do not represent Lewis idea of acids and base?
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Compounds which have completely filled orbitals
Compounds which have incompletely filled orbitals
Compounds in which the central atom can expand its octel
All simple metal ions like Ag+, Al3+ etc.
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Question # 6
Any substance which has solidified from the liquid state with crystallization is known as
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Steel
Fibre
Glass
Asbestos
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Question # 7
Potentiometry is based on the measurement of which physical property.
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Electrical conductance
Electrical potential
Thermal conductance
Current
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Question # 8
Which of the following radical is not a member of II group.
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Cu
2+
Cd
2+
Ba
3+
K+
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Question # 9
Which of the following system has low as well as upper consolute temperature.
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Nicotine - water
Aniline -water
Triethlylamine -water
Phenol -water
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Question # 10
For an average exposure of 8 hours per day, the maximum permissible concentration limit of CO in the atmosphere is.
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50 ppm
500 ppm
10
3
ppm
20 ppm
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Question # 11
For dilute solutions colligative properties depend on.
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The number of the particles of the solute and nature of solvent.
The number of the solute particles and on their nature
The number of the solute particles and nature of solute and solvent
The number of the solute particles and irrespective of the nature of the solute and solvent.
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Question # 12
Group IV A consist elements.
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3
4
5
6
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Question # 13
Which of the following compounds combines with hemoglobin.
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CO2
CO
NO
N2
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Question # 14
Which of the following species has highest bond energy.
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H2
T2
D
Cl
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Question # 15
When SI is dipped with As, it becomes
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Superconductor
p-type conductor
N-type conductor
None of these
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Question # 16
The dye which is a constituent of Skiffs reagent used for detection formaldehyde group is.
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Gentain violet
Megneta
Phenolphthalein
Rosolic acid
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Question # 17
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 # 18
At the some temperature 0.1 M solution of urea is isotonic with.
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0.1 M glucose solution
0.1 M NaCl solution
0.1 M urea solution
0.1 M BaCl2 solution
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Question # 19
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 # 20
The formula of sulphur sequioxide
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SO4
S2O7
S2O3
SO3
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Question # 21
Select a basic amino acid.
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Glycine
Cystine
Alanine
Lysine
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Question # 22
Which of the following functional groups is not involved in ion exchange chromatography.
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Weak acids
Strong acids
Strong bases
Carbohydrates
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Question # 23
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 # 24
Which of the following is not a correct postulate of the kinetic theory of gases.
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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 # 25
The sugar present in RNA is
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D- ribose
D-Arabinose
D-Glucose
Deoxyribose
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Question # 26
Lewis concept explain the formation of
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Ionic bond
Covalent bond
Co-ordinate bond
Chemical bond
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Question # 27
For the respiration of sea divers mixture is used.
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He & O2
Ar & O2
Ne & O2
Kr & O2
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Question # 28
In which pair of species, the Lewis formulae contain same number of ion pairs and bond pairs but they are not isoelectronic.
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O2, N2
SO2, O3
PCl3 , BF3
SOCl2, COCl3
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Question # 29
In confining and growing nano roade CNTs will act as.
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Template
Support
Source of oxidant
Sieve
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Question # 30
Which is not true about polymers.
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Polymers do not carry any charge
Polymers have high viscosity
Polymers scatter light
Polymers have low molecular weight
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Question # 31
Which of the following statement is not correct n respect of Arrhenius concept.
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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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