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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
The number of mole of the solute dissolved per dm3 of the solution is called.
Choose an answer
Molality
Formality
Normality
Molarity
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Question # 2
In glass making the whole combination of ingredients is called a.
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Gangue
Batch
Mixture
None of these
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Question # 3
Compounds HCN and HNC are.
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Tautomers
Metamers
Functional isomers
Conformers
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Question # 4
Each of the following when present at para position decreases the acidic strength of phenol except.
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-NH2
-Cl
CH3O-
CH3-
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Question # 5
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 # 6
The electrolysis of molten metal hydride will produce dihydrogen gas.
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At cathode
At anode
At both the electrodes
At none of the electrodes
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Question # 7
Variable oxidation states is shown by
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Normal eleemnts
Metallic elements
Non metallic elements
Transition elements
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Question # 8
Group IV A consist of elements.
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3
4
5
6
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Question # 9
Which of the following analytical method is based on the rotation of light ratiation
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Refractomerty
Polarimetry
Interformetry
Polarography
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Question # 10
A molecule returns from the excited singlet state to the ground singled state with emission of light , This process is known as.
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Fluorescene
Scattering
Phosphorescence
Chemiluminescence
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Question # 11
Since the acid gives both acidic and normal salts so the acid is.
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di acid
di basic
double salt
Any of above
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Question # 12
Which of the following does not have an a,b, unsaturated carbonyl group.
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Androsterone
Oestrone
Testosterone
Progesterone
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Question # 13
Which of the following compounds cannot be a monomer.
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CH3-CHOOH -CH2OH
NH2 -CH2-NH2
CH3-CH2-NH3
NH2-CH2-CH-CH2 -NH2
CH3
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Question # 14
Hydrogen bond is not electrostatic in nature is stated by
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Electrostatic approach
Valence bond approach
Molecular orbital approach
None of the abvoe
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Question # 15
The reduction in ozone layer would lead to
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Temperature chages
Rainfall failure
Increase uv radiation on earth
All above
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Question # 16
Al2Cl6 is an example of
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Ionic bond
Covalent bond
Co ordinate bond
Metallic bond
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Question # 17
Arrange the hydrides of group 15 in the correct order of reducing nature.
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NH3 < PH3 < AsH3 < Sb H3 < BiH3
NH3 > PH3 >AsH3 >Sb H3 > BiH3
PH3 < AsH3 < SbH3 < BiH3 < NH3
PH3 > AsH3 > SbH3 > BiH3 > NH3
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Question # 18
Which of the following is not alloy of aluminium.
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Aluminium bronze
Magnalum
Duralumin
Stellite
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Question # 19
In Nano synthesis new unsual chemical reactions are due to.
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Non equilibrium system
Equilibrium system
Isothermal system
Adiabatic process
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Question # 20
Codon for amino acid glycinc is not represented by base pair
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GCA
GGC
GGA
GGU
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Question # 21
Hydrolysis of nucleoprotein result in the formation of.
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Proteins
Nucleic acids
Both A and B
They do not hydrolyse
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Question # 22
In XeF2 molecules, Xe atom undergoes hybridization
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spd
sp2
sp3
sp3d
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Question # 23
The alkaline hydrolysis of fat is know as
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Condensation
Esterification
Saponification
Emulsification
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Question # 24
When alkyl iodidies are decomposed by light then the product obtained is.
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R - R
R - H
RCH2I
RCHI2
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Question # 25
Organic substance responsible for the smell of flowers etc. are grouped together in chemistry as.
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Perfumes
Terpenoids
Flavonoids
Alkaloids
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Question # 26
Transition elements, in general, exhibit the following properties, except one, Name that property.
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Variable oxidation state
Natural radioactivity
Tendency to form complexes
Formation of alloys
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Question # 27
The percentage of s-character in the hybrid orbitals sp, sp2 and sp3 follows the pattern.
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sp3 > sp2 > sp
sp > sp2 > sp3
sp = sp2 >sp3
sp = sp2 =sp3
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Question # 28
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 # 29
The increasing order of energies of various sub shells is
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1s < 2s<3s<2p<3p<4s<3d
1s <2s<2p<3s<3p<4s<3d
1s>2s>2p>3s>3p>4s>3d
1s>2s>2p>3p>3d>4s
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Question # 30
The property associated in thermometric tittration is
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Change in weight
Rate of change in weight
Heat evolved or absorbed
Change in temperature
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Question # 31
The dimensions for first order rate constant are.
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s-1
s mol-1
mol-1 s-1
s
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