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Online Tests
Chemistry 10th Class English Medium Unit 9 Online Test MCQs With Answers
Question # 1
The % age of nitrogen and oxygen in our atmosphere is:
Choose an answer
80
90
95
99
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Question # 2
A dynamic equilibrium
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Reaction stops to proceed
Amounts of reactants and products are equal
Rate of forward and reverse reaction are equl
Reaction can no longer be reversed.
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Question # 3
What is the colour of hydrogen iodide in product?
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Purple
Yellow
Blue
Colorless
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Question # 4
The value of equilibrium constant (Kc) depends only on:
Choose an answer
temperature
Pressure
concentration
density
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Question # 5
For reactions having large Kc value, the reaction proceeds to:
Choose an answer
Completion
Equilibrium state
back ward
None of these
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Question # 6
Reactions which have comparable amounts of reactants and products at equilibrium state have:
Choose an answer
very small Kc value
Very large Kc value
Moderate Kc value
None of these
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Question # 7
Which one of the following statements is not correct about active mass?
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Rate of reaction is directly proportional to activ emass.
Active mass is taken in molar concentration
Active mass is represented by square brackets
Active mass means total mass of substances.
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Question # 8
The reaction goes from left to right , if:
Choose an answer
Qc = Kc
Qc > kc
Qc<Kc
Qc = 0
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Question # 9
A complete reaction is one is which.
Choose an answer
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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