CBSE Class 10 Science Chapter 2 Acids Bases and Salts MCQs have questions of varying difficulty levels to help students in the board exam preparation. They can easily download the CBSE Class 10 Science MCQs Chapter 2 Acids Bases and Salts PDF from the link below. They can also access the CBSE Class 10 Science MCQs for other chapters to boost their exam preparation. Here are 30 MCQs based on the chapter "Acids, Bases, and Salts" from the 10th CBSE board syllabus, along with the answers provided at the end. Additionally, I will provide 20 more MCQs specifically focused on reactions of acids, bases, and salts.
30 MCQs on Acids, Bases, and Salts:
1. Which of the following is NOT a property of acids?
a) Turn blue litmus paper red
b) Have a sour taste
c) React with metals to produce hydrogen gas
d) Feel soapy and slippery
2. Which of the following is a strong acid?
a) Acetic acid (CH3COOH)
b) Hydrochloric acid (HCl)
c) Citric acid (C6H8O7)
d) Carbonic acid (H2CO3)
3. Which gas is produced when an acid reacts with a metal?
a) Oxygen gas (O2)
b) Carbon dioxide gas (CO2)
c) Hydrogen gas (H2)
d) Nitrogen gas (N2)
4. What is the chemical formula for sulfuric acid?
a) HNO3
b) H2SO4
c) HCl
d) H3PO4
5. When an acid reacts with a metal carbonate, which gas is evolved?
a) Oxygen gas (O2)
b) Carbon dioxide gas (CO2)
c) Hydrogen gas (H2)
d) Nitrogen gas (N2)
6. Which of the following is a natural indicator?
a) Phenolphthalein
b) Methyl orange
c) Turmeric
d) Universal indicator
7. What is the pH value of a neutral solution?
a) 0
b) 7
c) 14
d) None of the above
8. When a base reacts with a metal, which gas is evolved?
a) Oxygen gas (O2)
b) Carbon dioxide gas (CO2)
c) Hydrogen gas (H2)
d) Nitrogen gas (N2)
9. The reaction between an acid and a base is known as:
a) Substitution reaction
b) Combination reaction
c) Neutralization reaction
d) Redox reaction
10. Which of the following salts is formed by the reaction of hydrochloric acid and sodium hydroxide?
a) Sodium chloride (NaCl)
b) Sodium sulfate (Na2SO4)
c) Sodium nitrate (NaNO3)
d) Sodium carbonate (Na2CO3)
11. Which metal is present in the following salt: CuSO4?
a) Copper (Cu)
b) Calcium (Ca)
c) Carbon (C)
d) Cobalt (Co)
12. The pH value of a strong acid is:
a) 0
b) 7
c) 14
d) 1 to 3
13. Which of the following is an example of a Lewis acid?
a) HCl
b) NaOH
c) H2O
d) BF3
14. What is the chemical name of Ca(OH)2?
a) Calcium hydroxide
b) Carbon hydroxide
c) Copper hydroxide
d) Chromium hydroxide
15. Which acid is present in ant bites and stings?
a) Acetic acid
b) Lactic acid
c) Formic acid
d) Citric acid
16. Which base is present in baking soda?
a) Sodium hydroxide
b) Calcium hydroxide
c) Ammonium hydroxide
d) Sodium bicarbonate
17. What is the pH value of a basic solution?
a) 0
b) 7
c) 14
d) 8 to 14
18. Which of the following is an example of a strong base?
a) Ammonium hydroxide (NH4OH)
b) Sodium hydroxide (NaOH)
c) Potassium hydroxide (KOH)
d) Magnesium hydroxide (Mg(OH)2)
19. The chemical name of HCl is:
a) Hydrochloric acid
b) Hydrosulfuric acid
c) Hydrobromic acid
d) Hydroiodic acid
20. Which salt is formed when sulfuric acid reacts with potassium hydroxide?
a) Potassium sulfate (K2SO4)
b) Potassium nitrate (KNO3)
c) Potassium chloride (KCl)
d) Potassium carbonate (K2CO3)
21. Which acid is present in lemon juice?
a) Acetic acid
b) Citric acid
c) Lactic acid
d) Sulfuric acid
22. The chemical name of NaOH is:
a) Sodium hydroxide
b) Nitric acid
c) Nickel hydroxide
d) Nitrous oxide
23. Which gas is released when an acid reacts with a metal carbonate?
a) Oxygen
b) Hydrogen
c) Nitrogen
d) Carbon dioxide
24. The pH of a neutral solution is:
a) 0
b) 7
c) 14
d) 1
25. When an acid reacts with a metal, what is produced?
a) Hydrogen gas
b) Oxygen gas
c) Nitrogen gas
d) Carbon dioxide gas
26. Which of the following is an example of a strong acid?
a) H2SO4
b) H3PO4
c) CH3COOH
d) HNO3
27. The chemical formula for hydrochloric acid is:
a) HCl
b) H2SO4
c) HNO3
d) H3PO4
28. What is the pH of a basic solution?
a) 0
b) 7
c) 14
d) 12
29. Which acid is found in vinegar?
a) Sulfuric acid
b) Citric acid
c) Acetic acid
d) Nitric acid
30. The reaction between an acid and a base is called:
a) Substitution reaction
b) Neutralization reaction
c) Combination reaction
d) Displacement reaction
Answers:
1. d) Feel soapy and slippery
2. b) Hydrochloric acid (HCl)
3. c) Hydrogen gas (H2)
4. b) H2SO4
5. b) Carbon dioxide gas (CO2)
6. c) Turmeric
7. b) 7
8. c) Hydrogen gas (H2)
9. c) Neutralization reaction
10. a) Sodium chloride (NaCl)
11. a) Copper (Cu)
12. a) 0
13. d) BF3
14. a) Calcium hydroxide
15. c) Formic acid
16. d) Sodium bicarbonate
17. d) 8 to 14
18. b) Sodium hydroxide (NaOH)
19. a) Hydrochloric acid
20. a) Potassium sulfate (K2SO4)
21. b) Citric acid
22. a) Sodium hydroxide
23. d) Carbon dioxide
24. b) 7
25. a) Hydrogen gas
26. d) HNO3
27. a) HCl
28. d) 12
29. c) Acetic acid
30. b) Neutralization reaction
Now, let's move on to the additional 20 MCQs on reactions of acids, bases, and salts:
20 MCQs on Reactions of Acids, Bases, and Salts:
1. When a metal reacts with an acid, which gas is evolved?
a) Oxygen gas (O2)
b) Carbon dioxide gas (CO2)
c) Hydrogen gas (H2)
d) Nitrogen gas (N2)
2. Which acid is produced when sulfur dioxide dissolves in water?
a) Sulfuric acid (H2SO4)
b) Sulfurous acid (H2SO3)
c) Hydrochloric acid (HCl)
d) Nitric acid (HNO3)
3. What is the product of the reaction between hydrochloric acid and sodium hydroxide?
a) Sodium chloride and water
b) Sodium sulfate and water
c) Sodium nitrate and water
d) Sodium carbonate and water
4. Which gas is liberated when a metal reacts with an acid?
a) Oxygen gas (O2)
b) Hydrogen gas (H2)
c) Carbon dioxide gas (CO2)
d) Nitrogen gas (N2)
5. Which of the following is an example of an acidic oxide?
a) Calcium oxide (CaO)
b) Magnesium oxide (MgO)
c) Sulfur dioxide (SO2)
d) Sodium oxide (Na2O)
6. What happens when an acid is added to a base in a beaker?
a) The beaker gets cold
b) Bubbles of gas are evolved
c) The solution turns yellow
d) The solution turns green
7. Which of the following is a neutral salt?
a) Sodium chloride (NaCl)
b) Sodium hydroxide (NaOH)
c) Sodium bicarbonate (NaHCO3)
d) Sodium sulfate (Na2SO4)
8. The reaction between an acid and a metal is a:
a) Combustion reaction
b) Displacement reaction
c) Double displacement reaction
d) Redox reaction
9. Which gas is produced when an acid reacts with a metal carbonate?
a) Oxygen gas (O2)
b) Hydrogen gas (H2)
c) Carbon dioxide gas (CO2)
d) Nitrogen gas (N2)
10. What happens to the pH of a solution when an acid is added to it?
a) It increases
b) It decreases
c) It remains the same
d) It depends on the concentration of the acid
11. Which of the following is a basic salt?
a) Sodium chloride (NaCl)
b) Sodium hydroxide (NaOH)
c) Sodium bicarbonate (NaHCO3)
d) Sodium carbonate (Na2CO3)
12. What is the product of the reaction between nitric acid and calcium hydroxide?
a) Calcium nitrate and water
b) Calcium sulfate and water
c) Calcium chloride and water
d) Calcium carbonate and water
13. Which gas is produced when hydrochloric acid reacts with potassium sulfide?
a) Oxygen gas (O2)
b) Hydrogen gas (H2)
c) Chlorine gas (Cl2)
d) Hydrogen sulfide gas (H2S)
14. Which of the following is a common laboratory base?
a) Acetic acid (CH3COOH)
b) Sulfuric acid (H2SO4)
c) Sodium hydroxide (NaOH)
d) Nitric acid (HNO3)
15. What is the product of the reaction between acetic acid and potassium hydroxide?
a) Potassium acetate and water
b) Potassium sulfate and water
c) Potassium nitrate and water
d) Potassium carbonate and water
16. Which of the following is a salt?
a) Hydrochloric acid (HCl)
b) Sodium hydroxide (NaOH)
c) Calcium carbonate (CaCO3)
d) Magnesium sulfate (MgSO4)
17. Which gas is produced when nitric acid reacts with magnesium metal?
a) Oxygen gas (O2)
b) Hydrogen gas (H2)
c) Nitrogen gas (N2)
d) Carbon dioxide gas (CO2)
18. What is the product of the reaction between sulfuric acid and calcium carbonate?
a) Calcium sulfate and water
b) Calcium chloride and water
c) Calcium nitrate and water
d) Calcium bicarbonate and water
19. Which of the following is an example of an alkaline oxide?
a) Sulfur dioxide (SO2)
b) Carbon dioxide (CO2)
c) Magnesium oxide (MgO)
d) Nitrogen dioxide (NO2)
20. The reaction between an acid and a base is known as:
a) Substitution reaction
b) Combination reaction
c) Neutralization reaction
d) Redox reaction
Answers:
1. c) Hydrogen gas (H2)
2. b) Sulfurous acid (H2SO3)
3. a) Sodium chloride and water
4. b) Hydrogen gas (H2)
5. c) Sulfur dioxide (SO2)
6. b) Bubbles of gas are evolved
7. a) Sodium chloride (NaCl)
8. b) Displacement reaction
9. c) Carbon dioxide gas (CO2)
10. b) It decreases
11. d) Sodium carbonate (Na2CO3)
12. a) Calcium nitrate and water
13. d) Hydrogen sulfide gas (H2S)
14. c) Sodium hydroxide (NaOH)
15. a) Potassium acetate and water
16. c) Calcium carbonate (CaCO3)
17. b) Hydrogen gas (H2)
18. a) Calcium sulfate and water
19. c) Magnesium oxide (MgO)
20. c) Neutralization reaction