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MCQ Science and Technology Chapter 5 Class 9 Maharashtra Board

Acids, Bases and Salts

1. What is the primary cation produced by an acid in water according to the Arrhenius theory?

Question 1 of 20

2. Which substance turns litmus paper red, indicating it is acidic?

Question 2 of 20

3. What type of bond holds the ions together in an ionic compound like NaCl?

Question 3 of 20

4. What is the electronic configuration of a chlorine ion (Cl⁻) after gaining one electron?

Question 4 of 20

5. What happens to the ions of an ionic compound when it dissolves in water?

Question 5 of 20

6. Which of the following is a weak acid?

Question 6 of 20

7. What is the only anion produced by a base in water according to the Arrhenius theory?

Question 7 of 20

8. Which of the following is a strong base?

Question 8 of 20

9. How is the basicity of an acid defined?

Question 9 of 20

10. What is the acidity of a base defined as?

Question 10 of 20

11. Why does a solution with less water and the same amount of lemon juice taste more sour?

Question 11 of 20

12. What unit expresses the concentration of a solute as the number of moles per litre?

Question 12 of 20

13. What is the pH of a neutral solution like pure water at 25°C?

Question 13 of 20

14. What is the pH range of a basic solution?

Question 14 of 20

15. What is the purpose of a universal indicator?

Question 15 of 20

16. What is the most accurate method for measuring the pH of a solution?

Question 16 of 20

17. What happens to the pH of a dilute HCl solution when NaOH is added gradually?

Question 17 of 20

18. What is the net ionic reaction during the neutralization of an acid and a base?

Question 18 of 20

19. What gas is produced when zinc reacts with dilute sulphuric acid?

Question 19 of 20

20. What is the chemical formula of red oxide used in the reaction with HCl?

Question 20 of 20


 

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