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. K_c is equal to 0

the concentration of reactants and products is almost same

the reaction has maximum reactant concentration and minimum product concentration

the reaction has maximum product concentration and minimum reactant concentration

If K_c is very large, then:

2. None of them

equal to 1

less than 1

The reaction is a reverse reaction, if K_c is:

larger than 1

3. None of these

K_c is neither very small nor very large

K_c is very large

K_c is very small

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

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

physical reaction

Both chemical and physics reaction

chemical reaction

None of these

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

Reaction goes to completion

Reaction mixture contain most of the reactant

Reaction mixture contain most of the product

Reaction mixture contain almost equal amount of reactant and product

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

Rate of the forward reaction > Rate of the reverse reaction

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

7. A reversible reaction containing:

four processes

three processes

one process

two processes

8. 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)+ 3H_2(g) ⇌ 2NH_3(g)

N_2(g)+ O_2(g) ⇌ 2NO_(g)

9. The system is stable in equilibrium when:

Q_c > K_c

None of these

Q_c < K

Q_c = K_c

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

before the completion of reaction

after the completion of reaction

it depends on the amount of reactants

at any time

11. The rate at which a substance reacts is directly proportional to its:

density

active mass

concentration

atomic mass

12. Which one is not a reversible reaction?

Evaporation

Melting

Freezing

Combustion

13. product

Pressure

Density

Temperature

It is the single factor affecting the equilibrium constant’s value.

14. Numbers of moles

K_c is independent of :

Reactant and Product concentration

Product concentration

Reactant concentration

15. oxygen and ozone

16. Equilibrium is a state in which:

the forward reaction rate is less than the reverse reaction rate

forward reaction rate and reverse reaction rate become zero

the forward reaction rate is more than the reverse reaction rate

forward reaction rate and reverse reaction rate are equal

17. 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 molar concentration of product and molar volume of reactant

ratio of product and reactants

18. None of them

nitrogen and oxygen

These are the most important part of the atmosphere.

oxygen and carbon dioxide

carbon dioxide and methane

19. equal to 0

Which statement is true if Q_c < K_c?

The forward reaction occurs, forming additional products

Increase in product concentration for equilibrium.

Both of these

20. The unit of K_c for reaction N₂ + O₂ ⇌ 2NO

mol^–2 dm⁶

no unit

mol^–1 dm³

mol dm^–3

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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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