Chemistry Chemical Equilibrium Online Quiz Test MCQs

Chemical Equilibrium is the state in which both reactants and products are present in concentrations that have no further tendency of changing over time. As this is a quite important topic, so given below is a free online quiz about it which will help you in checking and also improving your knowledge related to chemical equilibrium.

Chemistry Chemical Equilibrium Online Quiz Test MCQs

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Chemistry

1. A basic buffer solution can be prepared by mixing:

Weak acid and its salt with strong base.

Strong acid and its salt with weak base.

Strong base and its salt with weak acid.

Weak base and its salt with strong acid.

Question 1 of 15

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2. The rate of reaction:

Decrease as reaction proceeds

Increases as reaction proceeds

Remains same as reaction proceeds

May decrease or increase as reaction proceeds

Question 2 of 15

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3. The sum of pH and pOH is:

10

7

14

18

Question 3 of 15

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4. The process in which ionization of an electrolyte is suppressed by the addition of another strong electrolyte containing one same ion is called:

Common ion effect

Hydrolysis

Pyrolysis

Electrolysis

Question 4 of 15

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5. A reaction is reversible because:

Products are reactive

Reactants are reactive

Products are stable

Reactants are stable

Question 5 of 15

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6. What happens when a reaction is at equilibrium and more reactant is added:

Equilibrium remains unchanged

Forward reaction rate is increased

Backward reaction rate is increased

Forward reaction rate is decreased

Question 6 of 15

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7. The rate of a chemical reaction is directly proportional to product of molar concentration of reacting substance. It is called:

Law of mass action

Law of conservation of energy

Rate law

Active mass rule

Question 7 of 15

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8. Human blood has a pH of:

7.35

9.35

8.35

6.35

Question 8 of 15

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9. The pH value of 0.001M HCl solution is water is:

Exactly 7

>7

<7

Nearly 7

Question 9 of 15

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10. Conjugate base of a very weak acid is:

Relatively very weak base

Relatively strong base

Relatively weak base

Relatively very strong base

Question 10 of 15

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11. The pH of 0.001M NaOH aqueous solution is:

9

11

13

8

Question 11 of 15

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12. Acids and bases when dissolved in water:

None of above

May or may not be completely dissociated

May be completely dissociated

May not be completely dissociated

Question 12 of 15

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13. A chemical reaction A →B is said to be in equilibrium when:

Complete conversion of A to B has taken place

Rate of transformation of A to B is equal to B to A.

50% reactant has been changed to B.

Conversion of A to B is 50% complete.

Question 13 of 15

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14. Buffer capacity is maximum when both components have:

Low concentration

Equal concentration

High concentration

High and equal concentration

Question 14 of 15

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15. pH of pure water is:

14

7

9

0

Question 15 of 15

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