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MCQ Science and Technology Class 9 Chapter 14 Maharashtra Board

Substances in Common Use

1. What condition can excessive consumption of artificial food colors cause in children?

Question 1 of 20

2. Which is a natural food color source?

Question 2 of 20

3. What is a characteristic of a dye?

Question 3 of 20

4. What is a source of natural dyes?

Question 4 of 20

5. What is an adverse effect of artificial dyes in lipstick?

Question 5 of 20

6. What health risk is associated with the red color used on Rang Panchami?

Question 6 of 20

7. What is a component of deodorants that reduces sweating?

Question 7 of 20

8. What is a harmful effect of aluminium-zirconium compounds in deodorants?

Question 8 of 20

9. Who discovered Teflon?

Question 9 of 20

10. Why is Teflon used in non-stick kitchenware?

Question 10 of 20

11. What is a use of Teflon in vehicles?

Question 11 of 20

12. What is the purpose of powder coating on iron objects?

Question 12 of 20

13. What makes the powder stick to the metal surface in powder coating?

Question 13 of 20

14. What is formed on aluminium during anodizing?

Question 14 of 20

15. What is the role of the aluminium article in anodizing?

Question 15 of 20

16. What is the temperature range for firing porous ceramic?

Question 16 of 20

17. What material is used to make porcelain?

Question 17 of 20

18. What makes bone china harder than porcelain?

Question 18 of 20

19. What is a use of ceramics in space technology?

Question 19 of 20

20. What process is used to make advanced ceramics?

Question 20 of 20

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