Here are 10 one-word answer type questions based on the subtopic “Winnowing” from the chapter Separation of Substances in Class 6 NCERT Science, with answers and explanations included:
1. Question: Which method is used to separate husk from grain using wind?
Answer: Winnowing
Explanation: Winnowing is a method in which wind is used to separate lighter husk from heavier grain.
2. Question: What kind of component is removed by winnowing—lighter or heavier?
Answer: Lighter
Explanation: Lighter components like husk get blown away by wind during winnowing.
3. Question: What part of the crop remains on the ground after winnowing?
Answer: Grain
Explanation: Heavier grains fall down and form a heap during the winnowing process.
4. Question: What natural force is used in winnowing?
Answer: Air
Explanation: Moving air helps in blowing away the lighter particles during winnowing.
5. Question: What is commonly separated from wheat by winnowing?
Answer: Husk
Explanation: Husk is the dry outer covering of grains that is removed by winnowing.
6. Question: What do farmers use to perform winnowing in fields?
Answer: Platform
Explanation: Farmers often stand on a raised platform and drop the mixture from a height for winnowing.
7. Question: What kind of mixture can be separated by winnowing—similar or different weight?
Answer: Different
Explanation: Winnowing works when the components have a significant difference in weight.
8. Question: What direction must the mixture be dropped for winnowing to work?
Answer: Windward
Explanation: The mixture must be dropped in the direction of wind to carry the lighter component away.
9. Question: Is winnowing useful for separating salt and water—Yes or No?
Answer: No
Explanation: Winnowing is not suitable for liquids or soluble substances like salt and water.
10. Question: What remains airborne and gets blown away during winnowing?
Answer: Husk
Explanation: The light husk rises and is carried by wind, separating it from the heavier grain.
Let me know if you’d like similar sets for Sieving, Sedimentation, or any other method!
