Equilibrium NDA Questions

NDA Chemistry

Equilibrium MCQ Questions


7.
Which of the following factors does NOT affect the equilibrium constant?
A.
Temperature
B.
Pressure
C.
Concentration of reactants
D.
Catalyst
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ANSWER :
D. Catalyst
8.
The equilibrium constant of a reaction changes with change in__________
A.
Temperature
B.
Concentration of reactants
C.
Pressure
D.
None of the above
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ANSWER :
A. Temperature
9.
Le Chatelier's principle states that if a system at equilibrium is disturbed by changing the conditions, the system will__________
A.
Stay at equilibrium
B.
Counteract the change
C.
Stop the reaction
D.
Move to the left
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ANSWER :
B. Counteract the change
10.
If the concentration of reactants is greater than that of products at equilibrium, the reaction will__________
A.
Shift to the left
B.
Shift to the right
C.
Remain at equilibrium
D.
Not shift
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ANSWER :
B. Shift to the right
11.
The equilibrium constant for a reaction is__________
A.
Unitless
B.
Dependent on temperature
C.
Dependent on concentration
D.
Dependent on pressure
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ANSWER :
B. Dependent on temperature
12.
Which of the following is true for a system at equilibrium?
A.
The forward and reverse reactions occur at the same rate
B.
The reaction stops
C.
Only the reverse reaction occurs
D.
The concentration of reactants is zero
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ANSWER :
A. The forward and reverse reactions occur at the same rate