Question

Which of the following equipment can be used for separation of wheat grain from the husk and impurity?

• A. Thresher cum cleaner
• B. Cultivator
• C. Reaper
• D. Dryer

Hint:

Look for equipment that both threshes and cleans grain in one pass.

Answer 1

The Correct Option is A

A thresher-cum-cleaner is a combined machine that threshes the harvested crop, separating grain from the ear-head, and cleans it at the same time by separating grain from husk, chaff and other impurities using a built-in air-blast and sieve system, all in a single pass.
A cultivator is meant for preparing the seedbed, a reaper only cuts the standing crop, and a dryer just reduces the grain's moisture after harvest, none of which does the threshing-and-cleaning job described here.
That makes the thresher-cum-cleaner the correct answer, option 1.