Exploring Substances Acidic Basic and Neutral Class 7 Assertion and Reason Questions

Exploring Substances Acidic Basic and Neutral Class 7 Assertion and Reason Questions

Exploring Substances Acidic Basic and Neutral Class 7 Assertion and Reason Questions

Following questions are of Assertion (A), Reason (R) type questions. Choose the correct answer from the following options.

(a) Both A and R are true, and R is the correct explanation of A.

(b) Both A and R are true, but R is not the correct explanation of A.

(c) A is true, but R is false.

(d) A is false, but R is true.

1. (A): All acids taste sour.

(R): Acids are known to be bitter in taste.

Answer:

(c) A is true, but R is false.

2. (A): Bases feel slippery.

(R): For different solutions bases show different colours.

Answer:

(b) Both A and R are true, but R is not the correct explanation of A.

3. (A): Litmus paper can be used to test the nature of a solution.

(R): Litmus paper changes colour in acidic and basic solutions.

Answer:

(a) Both A and R are true, and R is the correct explanation of A.

4. (A): Lemon juice is acidic.

(R): Acidic substances turn blue litmus paper red.

Answer:

(a) Both A and R are true, and R is the correct explanation of A.

5. (A): Baking soda is a base.

(R): Bases turn red litmus paper blue.

Answer:

(a) Both A and R are true, and R is the correct explanation of A.