Threshing

Q.

35 What is the principle of threshing?

Q. Statement 1: Mangoes can be plucked from the trees but the grain seeds of plants like maize cannot be plucked from their stalks.

Statement 2: Grain seeds of maize are much bigger in size as compared to their stalks.

1. Statement 1 is true but statement 2 is false.
2. Statement 1 is false but statement 2 is true.
3. Statement 1 is true and statement 2 is the correct reason of statement 1.
4. Statement 1 and statement 2 are both false.

Q.

What do you mean by threshing.

Q.

39. How does one separate grain seeds from their stalks?

Q. Which separation method is based on gravity?

Q.

Statement 1: Mangoes can be plucked from the trees but the grain seeds of plants like maize cannot be plucked from their stalks.

Statement 2: Grain seeds of maize are very much bigger in size as compared to their stalks.

1. Statement 1 and statement 2 are both false.

2. Statement 1 is true and statement 2 is the correct reason of statement 1.

3. Statement 1 is true but statement 2 is false.

4. Statement 1 is false but statement 2 is true.

Q. Which separation method is based on gravity?

Q.

65 ……… are obtained from stalks by threshing.

Q.

Differentiate between threshing and winnowing.

Q. While preparing chapatis, Paheli found that the flour to be used was mixed with wheat grains. Which among the following is the most suitable method to separate the grains from the flour?

1. Threshing
2. Sieving
3. Winnowing
4. Filtration

Q. Which of the following term defines the change of state from vapours to liquid?

1. Sedimentation
2. Sublimation
3. Evaporation
4. Condensation

Q.

Name the suitable method to separate husk from the grain seeds.

1. Winnowing

2. Handpicking

3. Sieving

4. Threshing