Online MCQs – Chemical Equilibrium – Chemistry 10th

Class 10th | Chemistry | Chapter 1 | Chemical Equilibrium | Solved Online MCQs Test

Online MCQs Test of Chapter 1 (Chemical Equilibrium) Chemistry Class 10th Science Group – Sindh Board. According to New Examination Pattern / Syllabus of Sindh Board

1. None of them

These are the most important part of the atmosphere.

carbon dioxide and methane

nitrogen and oxygen

oxygen and carbon dioxide

2. A reversible reaction containing:

three processes

four processes

one process

two processes

3. Which statement is TRUE for a forward reaction?

All of them

It is always directed from right to left in a chemical reaction

Product produces reactant

Initially rate is fast but gradually slows down

4. The direction of a reaction can be predicted by the type of arrow:

doted lines

double straight line

single arrow

double arrow

5. densities

reverse reaction

forward reaction

in equilibrium

If K_c is larger than 1, the reaction is:

6. Equilibrium is a state in which:

forward reaction rate and reverse reaction rate become zero

forward reaction rate and reverse reaction rate are equal

the forward reaction rate is more than the reverse reaction rate

the forward reaction rate is less than the reverse reaction rate

7. Which statement is NOT true for reverse reaction?

Product produce reactant (Reactants ⟶ Products)

Initially rate is slow but gradually speeds up

All of them

It is always directed from left to right in a chemical reaction

8. Numbers of moles

Product concentration

Reactant and Product concentration

Reactant concentration

K_c is independent of :

9. The rate of a reaction is directly proportional to the product of the active masses of the:

None of them

products

products and reacting substances

reacting substances

10. Which of these are reversible reactions?

Evaporation

Condensation and Evaporation

Condensation

None of them

11. None of these

K_c varies with:

Reactant concentration

Product concentration

Temperature

12. Which one is not a reversible reaction?

Melting

Freezing

Evaporation

Combustion

13. In a reversible reaction, dynamic equilibrium is established:

at any time

before the completion of reaction

it depends on the amount of reactants

after the completion of reaction

14. Many physical and chemical changes are occurring in our surrounding which may be due to:

Both chemical and physics reaction

chemical reaction

None of these

physical reaction

15. oxygen and ozone

16. Q_c can be defined as:

ratio of molar concentration of product and reactant raised to the power of coefficient

ratio of molar concentration of product and molar volume of reactant

ratio of molar concentration of product and reactant at specific time

ratio of product and reactants

17. None of these

K_c is very small

This type of reaction is known as ‘Forward reaction’.

K_c is neither very small nor very large

K_c is very large

18. The system is stable in equilibrium when:

Q_c = K_c

Q_c < K

None of these

Q_c > K_c

19. None of these

There is decrease in product concentration as the process reverses, forming more products.

There is increase in product concentration as the process reverses, forming more products.

There is increase in product concentration as the process reverses, forming more reactants.

If Q_c > K_c:

20. As the reactant amount decreases, the rate of reactant transformation:

remains the same

increases

becomes zero

decreases

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Online MCQs Test preparation for Chemistry Class 10th (Science Group Sindh Board) helps students practice effectively. These multiple-choice questions are taken from Chapter 1 “Chemical Equilibrium” of the Class 10th Chemistry textbook. They fully cover the requirements of the objective section in the examination. This activity is a valuable resource for excellent exam preparation. The Online MCQs Test provides students with the best platform to assess their knowledge and practice independently.

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