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MDCAT Chemistry Chapter 7 Chemical Equilibrium Online Test MCQs With Answers
Question # 1
Of the given alkali metals, the one with smallest size is
Choose an answer
Rb
Cs
K
Na
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Question # 2
Mendeleeve's periodic law is based upon:
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valency
atomic weight
equivalent weight
atomic number
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Question # 3
If pH of buffer of 1 mole dm
-3
of HCOOH + 0.1 mole dm
-3
HCOONa having pKa = 3.78 is
Choose an answer
1.78
2.78
3.78
4.78
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Question # 4
The element with atomic number 57 belongs to:
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s-block
transition elements
lanthanides
actinides
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Question # 5
In order to classify the elements, Newland gave the idea of:
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atomic mass
atomic volume
triads
octaves
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Question # 6
Buffer solutions are mostly prepared by mixing:
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Three substances
Four substances
Two substances
Five substances
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Question # 7
Conjugate base of a very weak acid is:
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Relatively strong base
Relatively weak bass
Relatively very strong base
Relativelyvery weak base
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Question # 8
Which of the following pH is considered as acidic?
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9
11
8
1
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Question # 9
Acetic acid is 1.33% ionized in 1000 molecules of 0.1 M acetic acid the number of H
+
ions is
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1.33
13.3
1.33
1
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Question # 10
Catalyst use in Haber process
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V
2
O
5
V
2
O
5
and pt
Fe
Pieces of Fe in fused mixture of MgO, Al
2
O
3
and SiO
2
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Question # 11
Mendeleev s periodic table has number of groups and number of periods
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6,7
8,7
8,12
7,8
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Question # 12
When rate of forward reaction is equal to rate of backward reaction the established equilibrium
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Chemical equilibrium
Static equilibrium
Dynamic equilibrium
All of these
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Question # 13
The solution having zero pH will be
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Basic
High basic
Highly acidic
Neutral
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Question # 14
Chose a set among the following set of atoms which is arrange in decreasing order of electronegativities
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S > Si > P
N > O > F
F > O > N
Si > P > S
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Question # 15
Californium is the member of:
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alkali metals
alkaline earth metals
actinide series
lanthanide seires
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Question # 16
Choose an answer
Total pressure
Catalyst
Concentration of H
2
and l
2
Temperature
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Question # 17
According to modern periodic law variations in the properties of element are related to their
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Atomic weights
Atomic numbers
Nuclear weights
Neutron-protin ratios
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Question # 18
The valence shell electronic structure of an element is ns
2
np
5
. The element will belong to the group of
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Alkali metals
Inert metals
Noble gases
Halogens
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Question # 19
A solution of NaOH has pH = 13, then concentration of NaOH is
Choose an answer
10
-13
M
10
13
M
10
-1
M
10
+1
M
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Question # 20
In the periodic table which of following trend is correct across the periods
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Electronic affinity decrease
Electropositive character increases
Electronegative character decreases
Non-metallic nature increase
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Question # 21
The most abundant metal present in the human body is
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Ca
Fe
K
Na
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