MCQ Chapter 2 Class 7 Science Curiosity NCERT

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Exploring Substances: Acidic, Basic, and Neutral

1. What appeared on the white sheets when a liquid was sprayed at the science fair?

Question 1 of 20

2. What is the source of litmus used as an indicator?

Question 2 of 20

3. Which substance turns blue litmus paper red?

Question 3 of 20

4. What color does red litmus paper turn in a basic solution?

Question 4 of 20

5. Which of the following is a neutral substance?

Question 5 of 20

6. What taste is associated with acidic substances?

Question 6 of 20

7. How does a basic substance feel when rubbed between fingers?

Question 7 of 20

8. What is used to prepare lime water?

Question 8 of 20

9. What color does red rose extract turn in an acidic solution?

Question 9 of 20

10. What color does red rose extract turn in a basic solution?

Question 10 of 20

11. Which flower’s petals are used to make an acid-base indicator in one of the activities?

Question 11 of 20

12. What does turmeric paper indicate when it turns red?

Question 12 of 20

13. Which substance does not change the color of turmeric paper?

Question 13 of 20

14. What type of indicator is litmus?

Question 14 of 20

15. Which substance is an example of an olfactory indicator?

Question 15 of 20

16. What are the products of a neutralization reaction?

Question 16 of 20

17. What acid is injected into the skin during an ant bite?

Question 17 of 20

18. How can acidic soil be treated to improve plant growth?

Question 18 of 20

19. What is added to basic soil to neutralize it?

Question 19 of 20

20. What might cause a decline in fish population in a lake near an industrial area?

Question 20 of 20

 

MCQ
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Comments

  1. Anshuman parichha says:
    May 17, 2025 at 5:37 am

    very good questions

    Reply

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