Separation of Substances

Separation of substances Worksheet-7

Fill in the blanks:

Separation of substances Worksheet-8

Multiple-Choice Question:

1. Which kind of threshing is done by holding a pile of crop and beating on a rock?

(A) Pedal threshing                         (B) Manual threshing

(C) Machine threshing

2. What are the steps involved from cutting of rice crop to its safe storage?

(A) Cutting –> storing –> threshing –> drying –> storage

(B) Cutting  –> threshing –> drying, cleaning –> storage

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