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Online Tests
Chemistry 10th Class English Medium Unit 9 Online Test MCQs With Answers
Question # 1
The value of equilibrium constant (Kc) depends only on:
Choose an answer
temperature
Pressure
concentration
density
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Question # 2
When the numbers of moles of both sides are equal in a reaction, then the unit of K
c
will be:
Choose an answer
No unit
mol
-2
dm
6
mol dm
3
mol
-2
dm
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Question # 3
The reaction in which the number of moles reactants and products not equal in balance chemical equation the units of Kc for this reactions are
Choose an answer
mol
-2
dm
3
mol
2
mol dm
-1
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Question # 4
A complete reaction is one is which.
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All the reactants convert into products.
All the reactants do not convert into products.
Half reactants convert into products.
Only 10% reactants convert into products.
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Question # 5
In chemical reaction , the substances that combine are called.
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Reactants
Products
Equlibrium
Numerator
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Question # 6
When CaCO
3,
.is heated in an open flask, it decomposes to form calcium oxides and .
Choose an answer
O
2
CO
CO
2
CO
3
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Question # 7
Law of Mass Action was put forward by:
Choose an answer
G.N.Lewis
Lowry
Arrhenius
Gulbderg and Waage
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Question # 8
The major components of Atmosphere are:
Choose an answer
Carbon and Nitrogen
Nitrogen and Oxygen
Oxygen and Chlorine
None of these
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Question # 9
K
c
is always equal to
Choose an answer
Rf/Rr
Kf /Kt
Kf/Kr
Rr/Rt
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Question # 10
The substance formed during the chemical reaction are called.
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Products
Reactants
Radical
Element
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Question # 11
Guldberg and waage out forward law of mass action in:
Choose an answer
1889
1879
1869
1859
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Question # 12
Active mass is expressed as:
Choose an answer
{ }
[ ]
( )
l l
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Question # 13
At equilibrium state there are possibilities: OR types of chemical equilibrium are.
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1
2
3
4
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