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. The reaction rate depends on the concentration of the:

temperature

reactants

reactants and products

products

2. Which statement is TRUE for a forward reaction?

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

Initially rate is fast but gradually slows down

All of them

Product produces reactant

3. densities

in equilibrium

forward reaction

If K_c is larger than 1, the reaction is:

reverse reaction

4. When the magnitude of K_c is small, indicates:

Reaction mixture contain almost equal amount of reactant and product

Reaction mixture contain most of the product

Reaction mixture contain most of the reactant

Reaction goes to completion

5. The system is stable in equilibrium when:

None of these

Q_c = K_c

Q_c > K_c

Q_c < K

6. Which of these are reversible reactions?

Evaporation

None of them

Condensation

Condensation and Evaporation

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

Both chemical and physics reaction

None of these

chemical reaction

physical reaction

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

None of them

reacting substances

products and reacting substances

products

9. For which system does the equilibrium constant, K_c has units of concentration?

CO_2(g)+ H_2(g) ⇌ CO_(g)+ H₂O_(l)

H_2(g)+ I_2(g) ⇌ 2HI_(g)

N_2(g)+ O_2(g) ⇌ 2NO_(g)

N_2(g)+ 3H_2(g) ⇌ 2NH_3(g)

10. equal to 0

Which statement is true if Q_c < K_c?

Both of these

The forward reaction occurs, forming additional products

Increase in product concentration for equilibrium.

11. The value of K_c increases when:

[Product] is more

[Reactant = product]

[Reactant] is more

[Product] is less

12. oxygen and ozone

13. The state of dynamic equilibrium can be represented by:

Rate of the forward reaction = Rate of the reverse reaction = 0

Rate of the forward reaction > Rate of the reverse reaction

Rate of the forward reaction = Rate of the reverse reaction

Rate of the forward reaction < Rate of the reverse reaction

14. Q_c can be defined as:

ratio of molar concentration of product and reactant at specific time

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

ratio of product and reactants

ratio of molar concentration of product and molar volume of reactant

15. K_c = :

reactant x product

reactant

reactant / product

product / reactant

16. asher There is decrease in product concentration as the process reverses, forming more reactants.

If K_c is very small, then:

reactions never finish

reactions are considered to be at equilibrium

reactions are virtually complete

17. None of these

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

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

If Q_c > K_c:

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

18. A reversible reaction containing:

one process

two processes

three processes

four processes

19. Which statement is NOT true for reverse reaction?

Initially rate is slow but gradually speeds up

Product produce reactant (Reactants ⟶ Products)

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

All of them

20. A reaction which is never goes to completion is known as reversible reaction. Reversible reaction is represented by:

single arrow

doted lines

double arrow

double straight line

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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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