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MDCAT Chemistry Chapter 7 Chemical Equilibrium Online Test MCQs With Answers
Question # 1
An atom with high electronegativity has
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Large size
High ionization potential
Low electron affinity
Low ionization potential
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Question # 2
For which system does the equilibrium constant Kc has units of (concentration)
-1
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Question # 3
Which of the following alkali metals does not exist naturally
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Francium
Rubidium
Lithium
Cesium
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Question # 4
Variable valency is generally exhibited by
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Normal elements
Transition elements
Metallic elements
None of these
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Question # 5
Which of the following ion has the highest value of ionic radius?
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Li
+
F
-
O
2-
B
3+
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Question # 6
Which one of the following aqueous solutions has highest pH:
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0.1M HNO
3
0.1M HCI
0.02MH
2
SO
4
0.1M NaOH
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Question # 7
How does the ionization energy of 1st group elements vary?
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Increases down the group
Decreases down the group
Remains unchanged
Variation is not regular
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Question # 8
The most acidic oxide among the following is:
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CI
2
O
7
Na
2
O
AI
2
O
3
P
4
O
10
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Question # 9
In an exothermic reversible reaction increase in temperature shift the equilibrium to:
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Remains unchanged
Product side
Reactant side
None of above
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Question # 10
According to the Periodic Law of elements, the variation in properties of elements is related to their
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Atomic masses
Nuclear masses
Atomic numbers
Nuclear neutron-proton number ratios
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Question # 11
The unit of concentration is
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mol. ml
mol dm
-3
gm equivalent lit
-1
g lit
-1
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Question # 12
Solubility product
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is not for sparingly soluble ionic compounds
is for sparingly soluble ionic compounds
is useful for soluble ionic compounds
none of these
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Question # 13
Mark the longest period of the longest period of the periodic table:
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4th
6th
3th
7th
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Question # 14
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0.004
0.080
0.016
0.160
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Question # 15
Which one of the following has highest pH:
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Distilled water
Water saturated with chlorine gas
1M NH
4
OH
1M NaOH
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Question # 16
The group number of element in periodic table indicates
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Valency with respect to hydrogen
The number of electron in the outermost shell
The atomicity
Number of shell
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Question # 17
Point out one of these that does not reflect the periodicity of the elements:
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ionization potential
electronegativity
bonding behavior
neutron/proton ratio
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Question # 18
The ionization potential is lowest for the
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Halogens
Inert gases
Alkaline earth metals
Alkali metals
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Question # 19
The oxide of which of the following elements will be acidic in character
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Mg
Rb
Li
CI
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Question # 20
The compound having lowest boiling point is:
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H
2
S
H
2
Se
SiH
4
SnH
4
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