Here are 10 one-word answer type questions from the topic Use of more than one method of separation from your provided EVS book PDF. Each question is followed by the answer and a small explanation (together as you requested):
One-word Answer Questions (with answers and explanations)
1. Question: What method is used to remove big pieces like stones from grains?
Answer: Handpicking
Explanation: Large unwanted materials like stones or sticks can be removed by handpicking.
2. Question: What method is used to remove dust from rice after handpicking?
Answer: Washing
Explanation: Washing helps remove small dust particles sticking to the rice.
3. Question: Which method is used to separate heavier particles from lighter ones using wind or air?
Answer: Winnowing
Explanation: In winnowing, heavier grains fall down while lighter husk is blown away by wind.
4. Question: Which method is used to separate tea leaves from tea?
Answer: Filtration
Explanation: Tea leaves are separated from tea by using a sieve or filter.
5. Question: What method is used to remove water from boiled rice?
Answer: Decantation
Explanation: In decantation, water is carefully poured out without disturbing the rice.
6. Question: After sieving, what method is used to remove dust from flour?
Answer: Cleaning
Explanation: Flour is sieved first and then can be cleaned by blowing or brushing away dust.
7. Question: What do we use to separate fine particles from bigger ones in flour?
Answer: Sieving
Explanation: Sieving separates coarse particles from fine flour.
8. Question: What process is used after winnowing to remove small stones from grains?
Answer: Handpicking
Explanation: Even after winnowing, small unwanted things like stones are removed by handpicking.
9. Question: What is removed from water using filtration?
Answer: Impurities
Explanation: Filtration removes solid impurities from water.
10. Question: What two methods are used together to clean grains properly?
Answer: Winnowing and handpicking
Explanation: First, lighter husk is removed by winnowing, then small stones are removed by handpicking .
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