Separation of substances Worksheet-9

Separation of substances Worksheet-9

Multiple-Choice Question:

11. Which method is used to separate wheat bran from flour?

(A) Winnowing   (B) Hand-picking (C) Sieving

12. By which process we need to separate the grains from the stalks?

(A) Threshing      (B) Winnowing    (C) Sieving

13. Which of the following can be easily separated from bigger particles through sieve method?

(A) Flour              (B) Wheat bran   (C) Husk

14. Name the machine by which we can separate cotton fibres from its seeds?

(A) Cotton role    (B) Cotton ring    (C) Cotton gin

15. Which process involves the beating of stalks?

(A) Threshing      (B) Winnowing    (C) Sieving

16. We use _____ to separate tea leaves from tea.

(A) Strainer          (B) Grinder          (C) Mesher

17. Which process loosens and separates the husk from the grain?

(A) Threshing      (B) Winnowing    (C) Sieving

18. Which process is done by crushing the harvested stalks using bullocks?

(A) Threshing      (B) Winnowing    (C) Sieving

19. Combine harvester is a machine used in:

(A) Threshing process                     (B) Winnowing process

(C) Sieving process

20. The seed coverings and tiny pieces of leaves or stem are collectively called as:

(A) Wastes           (B) Chaff              (C) Remains

Answer Key:

11. (C)
12. (A)
13. (A)
14. (C)
15. (A)
16. (A)
17. (A)
18. (A)
19. (A)
20. (B)