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Online Tests
PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Which of the following test to used to find out whether the observed data differ significantly from the one obtained from theoretical distribution.
Choose an answer
Chi square test
F -Test
Student's test
Coefficient of variance
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Question # 2
Which of the following statement is not true for carbon.
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Its forms compounds with multiple bonds
Its ionization energy is very high
It undergoes catanation
It shows inert pair effect
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Question # 3
Which one of the following pairs are chemically dissimilar.
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Na and K
Ba and Sr
Zr and HF
Ca and Zn
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Question # 4
Which of the following biogeochemical cycle is not component of ecosystem.
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Carbon cycle
Potassium cycle
Oxygen cycle
Nitrogen cycle
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Question # 5
Which of the following alkyl halide undergoes nucleophilic substitution reaction via the formation of a carboncation.
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1-chloro -2 methyl propane
2- chlro-2-methyl propane
2- chloro butane
1-Chloro, 3,3- dimethyl pentane
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Question # 6
Bromination of n-butane produces.
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I-bromobutane as the major product
2- bromobutane as the major product
Both I - bromo and 2- bromobutane with equal percentage
Both i-bromo and 2-bromo products whose percentage depends upon temperature.
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Question # 7
Which name is associated with the rules which help in predicting the portability of anion.
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Soddy
Slater
Fajan
Linus pauling
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Question # 8
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 # 9
Identify an oxygenated cyclic terpenoid
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a- pinene
Camphor
Citral
Geranial
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Question # 10
The interactions in HF are.
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dipole dipole interasctions
Hydrogen bonds
dipole -dipole and dispersion forces
Hydrogen bond and diapersin forces
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Question # 11
The emission of light characteristics of metal and correlation of intensity of the light emitted with concentration of that metal forms the basis of.
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Roman spectroscopy
IR spectroscopy
Flame photometry
Rotational spectroscopy
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Question # 12
Lother Meyer plotted a graph showing variation of.
Choose an answer
Atomic volume with increase in atomic number
Atomic volume with increase in atomic weight
Atomic redii with increase in atomic weight.
Atomic weight which increase in atomic number
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Question # 13
If diesel has cetane number of 50 then the diesel index will be.
Choose an answer
36
46
56
66
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Question # 14
Both the elements are typical non metals.
Choose an answer
B & Ai
B & Si
Al & Si
Any of above
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Question # 15
A steel cannot qualify for stainless prefix until it has at least how many percent of chromium.
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10 %
20 %
5 %
30 %
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Question # 16
Which of the following sets of quantum number is possible.
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n = 4, l = 3, m = -3 ,s = 0
n = 4, l = 0, m = 0, s =+1/2
n = 4, l = 4, m = -4, s = -1/2
None of these
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Question # 17
The vapours attacks the eyes and mucous membrane of nose and throat
Choose an answer
F
Cl
I
Br
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Question # 18
The magnitude of electron affinity depends on.
Choose an answer
Atomic size
Nuclear charge
Electronic configuration
All of the above
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Question # 19
CFT can very well explain
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Color
Magnetic properties
Spectra of transition metal
All
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Question # 20
Which of the following statement is not related to the characteristics of gaseous state.
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The inter molecular forces of attraction are not strong in gaseous state
The gases do not have definite shape and volume
The gases are characterized by low density.
The gases have low comprehensibility
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Question # 21
Which of the following statement is not related with environmental pollution.
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Direct or indirect change in any component of the biosphere
Undesirable change in the physical characteristics of the air
Undesirables change in the biological characteristics of the soil
not affecting adversely the industrial progress
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Question # 22
Which of the following molecules have centre of symmetry.
Choose an answer
H2O
HCl
CO2
H2SO4
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Question # 23
The conductance of 1 cm3 of an electrolytes solution is called its.
Choose an answer
Specific resistance
Specific conductance
Molar conductance
Equivalent conductance
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Question # 24
The maximum degree of freedom for a pure substance under equilibrium constitutions is
Choose an answer
1
2
3
zero
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Question # 25
Which of the following pollutant result from roasting and heating processes.
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Dust
Smoke
Metal fumes
All above
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Question # 26
The size of E coli bacteria is._____________ nm
Choose an answer
75000
2000
200
5
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Question # 27
The melting of nearly all glass is done in a continuous tank furnace. which operates steadily over periods of up to.
Choose an answer
a day
a month
a year
None of these
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Question # 28
An example of acyclic monotterpenoid is
Choose an answer
a -pinene
Camphor
Geranial
Citral
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Question # 29
What types of bonding occurs in d-block elements.
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Ionic
Covalent
Metallic
Both B and C
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Question # 30
Which of the following is not an alkali metal.
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Potassium
Francium
Sodium
Strontium
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Question # 31
The correct order of second ionization potential of carbon , nitrogen, oxygen and fluorine is.
Choose an answer
C > N > O > F
O > N > F > C
O > F > N > C
F > O > N > C
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