eVidyarthi

MCQ Science and Technology Class 9 Chapter 4 Maharashtra Board

Measurement of Matter

1. Which radical is an example of a composite radical?

Question 1 of 20

2. Which radical is considered a basic radical?

Question 2 of 20

3. Which radical is an acidic radical?

Question 3 of 20

4. What is the chemical formula of calcium carbonate?

Question 4 of 20

5. What is the molecular mass of Na₂SO₄?

Question 5 of 20

6. How many molecules are in 90 g of water?

Question 6 of 20

7. What is the mass of 0.2 moles of sodium chloride (NaCl)?

Question 7 of 20

8. What is the molecular mass of MgCl₂?

Question 8 of 20

9. Which law is verified by the experiment with copper oxide samples?

Question 9 of 20

10. What is the charge on the ammonium radical (NH₄⁺)?

Question 10 of 20

11. What is the chemical formula of potassium nitrate?

Question 11 of 20

12. What is the valency of the nitrate radical (NO₃⁻)?

Question 12 of 20

13. Which radical is an exception to the rule that basic radicals are formed from metals?

Question 13 of 20

14. What is the molecular mass of CO₂?

Question 14 of 20

15. What is the mass of 0.2 moles of magnesium oxide (MgO)?

Question 15 of 20

16. What is the chemical formula of ammonium phosphate?

Question 16 of 20

17. What is the proportion by mass of copper to oxygen in CuO?

Question 17 of 20

18. What is the molecular mass of K₂CO₃?

Question 18 of 20

19. Which law is demonstrated by the equal mass of reactants and products in Activity 1?

Question 19 of 20

20. What is the chemical formula of magnesium oxide?

Question 20 of 20

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