Types of Displacement Reactions, Class 10 Science NCERT Solutions

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. In a given reaction, barium hydroxide reacts with ammonium chloride to form product X and Y. Identify X and Y.
Ba(OH)₂ + NH₄Cl → X + Y

BaCl₂ and NH₄OH

BaCl₂ and NH₃

BaCl₂ and H₂O

NH₄ and H₂O

Question 1 of 20

2. Which of the following is an example of displacement reaction?

4 Na+ O₂ → 2 Na₂O

2 Cu + O₂ → 2 CuO

Mg + 2 HCl → MgCl₂ + H₂

N₂ + 3 H₂ → 2 NH₃

Question 2 of 20

3. A more reactive metal displaces a less reactive metal from the aqueous solution. From the following set tell which one represents a correct picture, of both the possible (√) reaction and impossible (x) reactions between metals and the solution of different salts.

A

B

C

D

Question 3 of 20

4. The reactions in which a precipitate is formed are also known as:

Combination reactions

Decomposition reactions

Precipitation reactions

None of these

Question 4 of 20

5. The reaction, Zn + 2HCl → ZnCl₂ + H₂ is an example of:

Displacement reaction

Combination reaction

Double displacement reaction

Decomposition reaction

Question 5 of 20

6. Zinc granules were added to zinc sulphate, copper sulphate, aluminium sulphate and iron sulphate solutions as shown below. You would observe the deposition of metal on zinc in beakers:

 

Only II

Only I

II and IV

I and III

Question 6 of 20

7. When a solution of sodium sulphate is added to a solution of barium chloride, a white precipitate appears. The white precipitate is due to formation of:

Barium sulphide

Barium sulphate

Barium chloride

Sodium chloride

Question 7 of 20

8. Iron displaces copper from its salt solution because:

Both Fe and Cu are equally reactive

Fe is less reactive than Cu

Fe is more reactive than Cu

None of the above

Question 8 of 20

9. Which metallic spoon can be used to stir lead nitrate solution?

Sodium

Silver

Iron

Aluminium

Question 9 of 20

10. Which of the following metal comes below copper in reactivity series ?

Aluminium

Iron

Silver

Zinc

Question 10 of 20

11. The reaction between lead nitrate and potassium iodide is an example of _______ .

decomposition reaction

double displacement reaction

combustion reaction

combination reaction

Question 11 of 20

12. Four students studied reactions of zinc and sodium carbonate with dilute hydrochloric acid and dilute sodium hydroxide solutions and presented their results as follows. The '√' represents evolution of gas whereas 'X' represents absence of any reaction,

The right set of observations is that of student:

B

D

A

C

Question 12 of 20

13. Fe₂O₃ + 2Al → Al₂O₃ + 2Fe
The above reaction is an example of a:

Decomposition reaction

Combination reaction

Displacement reaction

Double displacement reaction

Question 13 of 20

14. Which of the following metals comes above zinc in reactivity series ?

Silver

Copper

Aluminium

Iron

Question 14 of 20

15. The given reaction indicates that:
Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag

Copper is more reactive than silver.

Silver is more reactive than copper.

Both are equally reactive.

None of these

Question 15 of 20

16. The colours of aqueous solutions of CuSO₄ and FeSO₄ as observed in the laboratory are:

Dark blue and pale green respectively.

Dark blue and dark green respectively.

Pale green and light blue respectively.

Light blue and dark green respectively.

Question 16 of 20

17. Which of the following statement is correct?

No precipitate is formed in a double displacement reaction.

No metal can displace hydrogen from acids.

A more active metal can displace a less active element from its salt solution.

A less active metal can displace a more active element from its solution.

Question 17 of 20

18. When iron fillings are added to a blue coloured copper sulphate solution, what colour change would you observe in solution?

No change

Green

Red

Orange

Question 18 of 20

19. A strip of copper was placed in a beaker containing zinc sulphate solution. On observing the strip next day, it was noticed that:

The colour of the copper strip changed.

The copper strip remained as it was.

The copper strip became thicker.

The copper strip became thinner.

Question 19 of 20

20. Fe + CuSO₄ FeSO₄ + Cu
Zn + FeSO₄ ZnSO₄ + Fe
From the above information, the order of metals in increasing order of reactivity is:

Zn < Fe < Cu

Fe < Zn < Cu

Cu < Fe < Zn

Fe < Cu < Zn

Question 20 of 20

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