MCQ Science Curiosity Chapter 9 Class 8 CBSE Board

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The Amazing World of Solutes, Solvents, and Solutions

1. What is the SI unit of density?

Question 1 of 20

2. What is the approximate mass of 100 mL of water at room temperature?

Question 2 of 20

3. What is the density of an aluminium block with a mass of 27 g and a volume of 10 cm³?

Question 3 of 20

4. What is the relative density of aluminium with a density of 2.7 g/cm³ compared to water?

Question 4 of 20

5. Why does oil float on water?

Question 5 of 20

6. What instrument is used to measure the mass of an object?

Question 6 of 20

7. What does the tare button on a digital weighing balance do?

Question 7 of 20

8. What is the SI unit of volume?

Question 8 of 20

9. What apparatus measures the volume of liquids?

Question 9 of 20

10. What is the smallest volume a 100 mL measuring cylinder with 10 divisions between 10 mL marks can measure?

Question 10 of 20

11. Why are measuring cylinders designed to be narrow and tall?

Question 11 of 20

12. What is the curved surface of a liquid in a measuring cylinder called?

Question 12 of 20

13. How should the volume of water be read in a measuring cylinder?

Question 13 of 20

14. How is the volume of a colored liquid read in a measuring cylinder?

Question 14 of 20

15. How is the volume of a cuboid-shaped object calculated?

Question 15 of 20

16. How is the volume of an irregular solid measured?

Question 16 of 20

17. If a stone increases the water level in a measuring cylinder from 50 mL to 55 mL, what is its volume?

Question 17 of 20

18. What is the density of a stone with a mass of 16.4 g and a volume of 5 cm³?

Question 18 of 20

19. Why do bamboo rafts float on water?

Question 19 of 20

20. How does heating generally affect the density of a substance?

Question 20 of 20


 

 

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