Question 1

1. Which of the following is a displacement reaction?

A) $MgCO_3 \rightarrow MgO + CO_2$B) $Zn + 2HCl \rightarrow ZnCl_2 + H_2$C) $2H_2 + O_2 \rightarrow 2H_2O$D) $CaO + H_2O \rightarrow Ca(OH)_2$

Answer

✓ Correct Answer: Option B

Question 2

2. Magnesium ribbon is rubbed before burning because it has a coating of:

A) Basic magnesium oxideB) Basic magnesium carbonateC) Basic magnesium chlorideD) Basic magnesium sulphate

Question 3

3. What happens when dilute hydrochloric acid is added to iron filings?

A) Hydrogen gas and iron chloride are produced.B) Chlorine gas and iron hydroxide are produced.C) No reaction takes place.D) Iron salt and water are produced.

Answer

✓ Correct Answer: Option A

Question 4

4. Oxidation is a process which involves:

A) Addition of hydrogenB) Removal of oxygenC) Addition of oxygenD) Addition of electrons

Answer

✓ Correct Answer: Option C

Question 5

5. The process of reduction involves:

A) Addition of oxygenB) Addition of hydrogenC) Removal of hydrogenD) Loss of electrons

Answer

✓ Correct Answer: Option B

Question 6

6. In the reaction $CuO + H_2 \rightarrow Cu + H_2O$, the oxidizing agent is:

A) CuOB) $H_2$C) CuD) $H_2O$

Answer

✓ Correct Answer: Option A

Question 7

7. Which of the following gases can be used for the storage of a fresh sample of oil for a long time?

A) Carbon dioxide or oxygenB) Nitrogen or oxygenC) Carbon dioxide or heliumD) Helium or nitrogen

Answer

✓ Correct Answer: Option D

Question 8

8. The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy is an example of:

A) Endothermic reactionB) Exothermic reactionC) Reversible reactionD) Displacement reaction

Answer

✓ Correct Answer: Option B

Question 9

9. A chemical equation is balanced in accordance with the law of:

A) Conservation of massB) Definite proportionsC) Multiple proportionsD) Reciprocal proportions

Answer

✓ Correct Answer: Option A

Question 10

10. When silver is exposed to air, it gets a black coating of:

A) $AgNO_3$B) $Ag_2O$C) $Ag_2S$D) $Ag_2CO_3$

Answer

✓ Correct Answer: Option C

Question 11

11. Which of the following is an endothermic process?

A) Sublimation of dry iceB) Dilution of sulphuric acidC) Condensation of water vapoursD) Respiration in human beings

Answer

✓ Correct Answer: Option A

Question 12

12. Rancidity can be prevented by:

A) Adding antioxidantsB) Storing food away from lightC) Packaging oil and fat-containing foods in nitrogen gasD) All of the above

Answer

✓ Correct Answer: Option D

Question 13

13. The reaction of water with quicklime to form slaked lime is an example of:

A) Endothermic reactionB) Exothermic combination reactionC) Decomposition reactionD) Double displacement reaction

Answer

✓ Correct Answer: Option B

Question 14

14. $Pb + CuCl_2 \rightarrow PbCl_2 + Cu$. The above reaction is an example of a:

A) Combination reactionB) Double displacement reactionC) Displacement reactionD) Decomposition reaction

Answer

✓ Correct Answer: Option C

Question 15

15. What occurs when carbon dioxide is passed through lime water?

A) It turns milky due to the formation of insoluble calcium carbonate.B) It turns milky due to the formation of soluble calcium hydroxide.C) It turns colorless due to the formation of calcium oxide.D) It evaporates instantly.

Answer

✓ Correct Answer: Option A

Question 16

16. The burning of methane (natural gas) is an example of:

A) Exothermic and oxidation reactionB) Endothermic and reduction reactionC) Decomposition and exothermic reactionD) Displacement and endothermic reaction

Answer

✓ Correct Answer: Option A

Question 17

17. The chemical formula of rust is:

A) FeOB) $Fe_2O_3 \cdot xH_2O$C) $Fe_3O_4$D) $Fe(OH)_3$

Answer

✓ Correct Answer: Option B

Question 18

18. Exposure of silver chloride to sunlight for a long duration turns it grey. This is due to:

A) The photolytic decomposition of silver chloride into silver and chlorineB) The sublimation of silver chlorideC) The oxidation of silver chlorideD) The formation of a complex of silver

Answer

✓ Correct Answer: Option A

Question 19

19. Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. This represents which type of reaction?

A) Displacement reactionB) Precipitation and combination reactionC) Double displacement and precipitation reactionD) Decomposition reaction

Answer

✓ Correct Answer: Option C

Question 20

20. The neutralization reaction between an acid and a base is typically a type of:

A) Displacement reactionB) Decomposition reactionC) Double displacement reactionD) Addition reaction

Answer

✓ Correct Answer: Option C

Grade 10 Chemical Reactions Interactive Quiz

1. Which of the following is a displacement reaction?

2. Magnesium ribbon is rubbed before burning because it has a coating of:

3. What happens when dilute hydrochloric acid is added to iron filings?

4. Oxidation is a process which involves:

5. The process of reduction involves:

6. In the reaction $CuO + H_2 \rightarrow Cu + H_2O$, the oxidizing agent is:

7. Which of the following gases can be used for the storage of a fresh sample of oil for a long time?

8. The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy is an example of:

9. A chemical equation is balanced in accordance with the law of:

10. When silver is exposed to air, it gets a black coating of:

11. Which of the following is an endothermic process?

12. Rancidity can be prevented by:

13. The reaction of water with quicklime to form slaked lime is an example of:

14. $Pb + CuCl_2 \rightarrow PbCl_2 + Cu$. The above reaction is an example of a:

15. What occurs when carbon dioxide is passed through lime water?

16. The burning of methane (natural gas) is an example of:

17. The chemical formula of rust is:

18. Exposure of silver chloride to sunlight for a long duration turns it grey. This is due to:

19. Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. This represents which type of reaction?

20. The neutralization reaction between an acid and a base is typically a type of: