Chemistry Class 10 0 To 20

Chemistry Class 10th

1. When the rate of condensation and evaporation is equal. That state is called

A) Balanced State

B) Equilibrium State

C) Condensation state

D) None of the above

2. _________ is used to show equilibrium state.

A) Forward Arrow

B) Reverse Arrow

C) Double Arrow

D) Bar

3. During the state of equilibrium, water vapors become constant:

A) True

B) False

4. In chemical reaction, substances that combine are called:

A) Substrates

B)Reactants

C) Products

D) Inhibitor

5. The substances that are formed by chemical reaction are called as:

A) Substrates

B) Reactants

C) Products

D) Inhibitors

6. Hydrogen and Nitrogen are the _______ of ammonia:

A) Reactants

B) Inhibitors

C) Products

D) None of the above

7. The reactions in which products do not recombine to form reactants again is called:

A) Combustible reaction

B) Irreversible reaction

C) Reversible reaction

D) None of the above

8. In irreversible reaction, reactants and products are separated by putting a :

A) Double arrow

B) Reverse arrow

C) Single Arrow

D) Bar

9. In irreversible reaction the arrow is directed from _______ to _______.

A) Reactants to Product

B) Products to reactants

C) Both A and B

D) None of the above

1. The reaction in which products have ability to recombine to form reactants again:

A) Combustible reaction

B) Nuclear reaction

C) Reversible reaction

D) Irreversible reaction

11. Which reaction can never achieve completion:

A)Reversible Reaction

B) irreversible reaction

C) Both A and B

D) none of the above

12. In reversible reaction, the reactants and the products are separated by putting a:

A) Single Arrow

B) Reverse Arrow

C) Double Arrow

D) Bar

13. In reversible reaction, the reactants and the products are separated by putting a:

A) Single Arrow

B) Reverse Arrow

C) Double Arrow

D) Bar

14. The arrow in reversible reaction is pointed from _______ to ______.

A) Reactant to Product

B) Product to reactant

C) Both A and B

D) None of the above

15. A _______ reaction is having a chemical equilibrium s

A) Irreversible

B) Reversible

C) Both A and B

D) None of these

16. Dynamic equilibrium is an equilibrium in which two chemical reaction occur at:

A) Equal rate and Similar direction

B) Unequal rate and similar direction

C) Equal rate and Opposite direction

D) Unequal rate and Opposite directionv

17. The ratio between the reactants and the product concentration in the reversible reaction is:

A) Constant

B) Always changing

C) Zero

D) None of the above

18. The dynamic equilibrium is achieved _______ of reaction.

A) Before the reaction

B) During the reaction

C) Before the Completion of the reaction

D) After the reaction

19. In Dynamic reaction, two chemical processes continue at :

A) Equal rate and Similar direction

B) Equal rate and Opposite direction

C) Unequal rate and Similar direction

D) Unequal Rate and Opposite direction

20. The system shall remain in equilibrium, if which of the following is not changed:

A) Pressure

B) Temperature

C) Concentration

D) All of the above