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10th Class Chemistry Chapter 9 Chemical Equilibrium English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Guldberg and waage put forward law of mass action in:
Choose an answer
1860
1869
1870
1879
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Question # 2
Which gas is used to prepare ammonia?
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N
2
O
2
Cl
2
S
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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
When CaCO
3,
.is heated in an open flask, it decomposes to form calcium oxides and .
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O
2
CO
CO
2
CO
3
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Question # 5
When the number of moles of both sides are equal in a reaction then the unit of Kc will be:
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no unit
mol-2 dm6
mol dm3
mo-2 dn
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Question # 6
In a chemical reaction, the substance that combine are called.
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Reactant
Products
Mass
Material
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Question # 7
The % age of nitrogen and oxygen in our atmosphere is:
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80
90
95
99
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Question # 8
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 # 9
When the magnitude of Kc is very large it indicates.
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Reaction mixture consist of almost all products.
Reaction mixture consist of almost all reactants.
Reaction has not gone to completion
Reaction mixture has negligible products.
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