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Online Tests
Chemistry 10th Class English Medium Unit 9 Online Test MCQs With Answers
Question # 1
The substance formed during the chemical reaction are called.
Choose an answer
Products
Reactants
Radical
Element
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Question # 2
At equilibrium state there are possibilities: OR types of chemical equilibrium are.
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1
2
3
4
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Question # 3
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 # 4
Such reationsin which reactants and products are sufficient in quantities the Kc value of equilibrium state will be
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Very small
Very large
Moderate
None of these
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Question # 5
When the numbers of moles of both sides are equal in a reaction, then the unit of K
c
will be:
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No unit
mol
-2
dm
6
mol dm
3
mol
-2
dm
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Question # 6
The color of Iodine is:
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Purple
Black
Red
Pink
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Question # 7
The reaction in which the products can recombine to form reactants are called.
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Reversible reaction
Irreversible reaction
Decomposition
Addition
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Question # 8
When the reaction causes to produced it is called.
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Chemical equlibrium state
Static equilibrium
Dynamic equilibriiun
All
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Question # 9
In chemical reaction , the substances that combine are called.
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Reactants
Products
Equlibrium
Numerator
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Question # 10
Which type of reactions take place in both directions?
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Addition reactions
Reversible reactions
Irreversibel reactions
Decomposition reactions
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Question # 11
The characteristics of reversible reactions are the following except:
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Products never recombine to form reactants.
They never complete
The proced in both ways
They have a double arrow between reactants and products.
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Question # 12
Equilibrium constant has no unit when number of moles of reactants and products are:
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same
Different
Both a and b
None of these
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Question # 13
If Qc < Kc the reaction goes in:
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Forward
Reverse
At equilibrium state
None
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