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MCQ Science and Technology Class 9 Chapter 14 Maharashtra Board

Substances in Common Use

1. What is the chemical name of common salt?

Question 1 of 20

2. Which ions are not present in simple salts?

Question 2 of 20

3. How many tons of salts are added to seawater annually?

Question 3 of 20

4. Which salt is found in seawater?

Question 4 of 20

5. What is the pH value of a neutral salt?

Question 5 of 20

6. What is the nature of a salt formed from a weak acid and a strong base?

Question 6 of 20

7. What is the molecular formula of sodium bicarbonate?

Question 7 of 20

8. What gas is released at the anode when a saturated solution of sodium chloride is electrolysed?

Question 8 of 20

9. What happens to sodium chloride when heated to about 800°C?

Question 9 of 20

10. What is a use of rock salt?

Question 10 of 20

11. What makes bhaji crisp when baking soda is added?

Question 11 of 20

12. What indicates that baking soda is basic in nature?

Question 12 of 20

13. What is a medical use of baking soda?

Question 13 of 20

14. What is the chemical name of bleaching powder?

Question 14 of 20

15. Why does bleaching powder have a strong odor?

Question 15 of 20

16. How is bleaching powder produced?

Question 16 of 20

17. What is a use of bleaching powder in water treatment?

Question 17 of 20

18. What is the chemical formula of washing soda?

Question 18 of 20

19. What causes the hardness of water?

Question 19 of 20

20. What is a physical property of washing soda?

Question 20 of 20

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