Properties of Acids and Bases Quiz - CBSE Class 9 Science

Free practice quiz: Properties of Acids and Bases (CBSE Class 9 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 9 Science practice quiz has 20 multiple-choice questions on Properties of Acids and Bases, and 20 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which of the following is a property of acids?

   1. They turn blue litmus red
   2. They taste bitter
   3. They feel slippery
   4. They are good conductors of electricity
   Show answer

   Answer: A. They turn blue litmus red

   A common property of acids is that they turn blue litmus paper red.

2. What color does phenolphthalein turn in a basic solution?

   1. Pink
   2. Colorless
   3. Blue
   4. Red
   Show answer

   Answer: A. Pink

   Phenolphthalein is a chemical indicator that turns pink in basic solutions.

3. What is a common use for sodium hydroxide?

   1. Glass making
   2. Paper production
   3. Preservative
   4. Food seasoning
   Show answer

   Answer: B. Paper production

   Sodium hydroxide, commonly known as lye, is used in the paper industry for processing wood into pulp.

4. Which base is used in the manufacture of soap?

   1. Sodium hydroxide
   2. Ammonium hydroxide
   3. Calcium hydroxide
   4. Lithium hydroxide
   Show answer

   Answer: A. Sodium hydroxide

   Sodium hydroxide is used traditionally in soap making as it reacts with fats in a process called saponification.

5. What is the term for a substance that can act as both an acid and a base?

   1. Amphoterism
   2. Isomerism
   3. Catalysis
   4. Decomposition
   Show answer

   Answer: A. Amphoterism

   Amphoterism refers to the ability of a substance to act as both an acid and a base.

More questions in this quiz

Answers and explanations are in the full quiz.

1. What is the pH range of a neutral solution?
2. Which of the following substances is likely to have a sour taste?
3. When dissolved in water, how do bases typically affect litmus paper?
4. Identify the compound that is an acid: HCl, NaOH, KCl, H2O.
5. Which of the following describes a basic solution?
6. Which substance turns both litmus papers into red color?
7. Limewater is the common name for which chemical?
8. Which reaction will typically occur between acids and bases?
9. What is the main component of gastric acid?
10. Which base used as an antacid to neutralize stomach acid?
11. Which gas is evolved when an acid reacts with metal?
12. What product forms when hydrochloric acid reacts with sodium hydroxide?
13. How would you describe the process of titration?
14. Why does a concentrated acid feel so corrosive?
15. In which environment does enzyme activity typically increase?

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