Separation Methods Quiz

In the story, Nani was removing stones from grains using which method?

• Winnowing

• Threshing

• Handpicking

• Filtration

Handpicking works best when the unwanted particles:

• Are heavier than the main substance

• Are present in large quantities

• Are present in small quantities and differ in size, colour, or shape

• Are of the same size as the main substance

Which of the following is an example of handpicking?

• Removing stones from rice

• Separating cream from milk

• Removing sugar from tea

• Separating salt from water

The process of separating grains from stalks is called:

• Winnowing

• Handpicking

• Threshing

• Sieving

Which method did farmers use after harvesting wheat stalks in the story?

• They beat the stalks on a wooden log

• They washed the stalks

• They boiled the stalks

• They dried the stalks in boiling water

Threshing separates:

• Stones from grains

• Husk from grains

• Grains from stalks

• Dust from pulses

What is the traditional tool used for winnowing?

• Mortar and pestle

• Bamboo tray (soop)

• Sieve

• Grinder

In winnowing, which component gets blown away?

• Heavier component

• Lighter component

• Both components together

• None of the above

Which property is used in winnowing to separate substances?

• Difference in shape

• Difference in weight

• Difference in colour

• Difference in taste

What was mixed with puffed rice in the activity?

• Wheat

• Chana (Bengal gram)

• Black pepper

• Stones