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MCQ Science and Technology Class 9 Chapter 5 Maharashtra Board

Acids, Bases and Salts

1. What type of compound is a metal oxide in the context of neutralization reactions?

Question 1 of 20

2. What gas is released when an acid reacts with a bicarbonate like baking soda?

Question 2 of 20

3. What is the pH of an aqueous solution of a neutral salt?

Question 3 of 20

4. What is the colour of blue vitriol crystals before heating?

Question 4 of 20

5. What colour does blue vitriol turn when heated?

Question 5 of 20

6. How many water molecules are in the water of crystallization of crystalline washing soda?

Question 6 of 20

7. Which of the following solutions conducts electricity due to ion dissociation?

Question 7 of 20

8. What is the electrode connected to the positive terminal of a battery called?

Question 8 of 20

9. What happens to Cu²⁺ ions during the electrolysis of a copper sulphate solution?

Question 9 of 20

10. What gas is formed near the anode during the electrolysis of water?

Question 10 of 20

11. Which of the following is a dibasic acid?

Question 11 of 20

12. What is the product of the reaction between MgO and dilute HCl?

Question 12 of 20

13. Which of the following is an amphoteric oxide?

Question 13 of 20

14. What is the colour of phenolphthalein in an acidic solution?

Question 14 of 20

15. What is the molarity of a solution with 2g NaOH in 50ml of solution? (Molecular mass of NaOH = 40g/mol)

Question 15 of 20

16. Which of the following salts is basic?

Question 16 of 20

17. What is the chemical formula of crystalline ferrous sulphate?

Question 17 of 20

18. What colour is the solution formed when water is added to heated blue vitriol?

Question 18 of 20

19. Which of the following is a weak electrolyte?

Question 19 of 20

20. What conducts electricity through a solution in an electrolytic cell?

Question 20 of 20

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