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MCQ General Science Chapter 15 Class 8 Maharashtra Board

MCQ For All Chapters – General Science Class 8

Sound

1. Why do male, female, and children’s voices differ?

Question 1 of 20

2. What component in a loudspeaker moves back and forth to produce sound?

Question 2 of 20

3. What energy is converted into sound energy in a loudspeaker?

Question 3 of 20

4. What can be felt by touching a loudspeaker screen producing sound?

Question 4 of 20

5. What is a major cause of environmental and social health issues according to the document?

Question 5 of 20

6. What is the region with low pressure and low density in a sound wave called?

Question 6 of 20

7. If 1000 compressions and rarefactions are produced per second, what is the frequency?

Question 7 of 20

8. What does the bell jar experiment demonstrate?

Question 8 of 20

9. What is used to remove air from the bell jar in the experiment?

Question 9 of 20

10. What happens to the grains on the rubber balloon in the project activity when someone shouts?

Question 10 of 20

11. What is the role of the epiglottis in the larynx?

Question 11 of 20

12. What causes the coil in a loudspeaker to move?

Question 12 of 20

13. What is the purpose of striking glass cups in the ‘Try this’ activity?

Question 13 of 20

14. What does the toy phone project with thread demonstrate?

Question 14 of 20

15. What is the typical sound level that can be harmful, as mentioned in the document?

Question 15 of 20

16. What is one cycle of a sound wave composed of?

Question 16 of 20

17. What instrument uses blown air to produce sound?

Question 17 of 20

18. What can be used to measure sound frequency in the ‘Jaltarang’ activity?

Question 18 of 20

19. What should be avoided to protect environmental and social health?

Question 19 of 20

20. What is stretched across a plastic glass in the second project to observe sound effects?

Question 20 of 20


 

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