eVidyarthi

MCQ General Science Chapter 15 Class 7 Maharashtra Board

MCQ For All Chapters – General Science Class 7

Materials we Use

1. What material is cement primarily used for in construction?

Question 1 of 20

2. What is the most commonly used type of cement?

Question 2 of 20

3. What is the main ingredient in Portland cement?

Question 3 of 20

4. Who developed the method of making aqueous cement in 1756?

Question 4 of 20

5. What is concrete made of?

Question 5 of 20

6. What did the Romans use to make their cement?

Question 6 of 20

7. Why are roads made of concrete nowadays?

Question 7 of 20

8. What causes soap to lose its cleansing property in hard water?

Question 8 of 20

9. Which of the following is a natural substance used for cleaning teeth in olden times?

Question 9 of 20

10. What is the role of salt in the soap-making process?

Question 10 of 20

11. What is a key difference between hard soap and soft soap?

Question 11 of 20

12. What is the source of fluoride in toothpaste?

Question 12 of 20

13. Why does oil float on water without detergent?

Question 13 of 20

14. What was used to make soap 2000 years ago?

Question 14 of 20

15. Which detergent is safe for silk and woolen clothes?

Question 15 of 20

16. What is magnesia in cement?

Question 16 of 20

17. What happens if cement is not used in concrete?

Question 17 of 20

18. Which substance was used in 19th-century toothpaste?

Question 18 of 20

19. What is the texture of Portland cement named after?

Question 19 of 20

20. What should a detergent for delicate garments do?

Question 20 of 20


 

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