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CTET Filtration — practice questions

Explore 52 free Filtration questions in CTET Science. Open each question or exercise to read its content, reference answers and available explanation.

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Filtration questions and exercises with answers

Showing questions 1–30 of 52.

What is separated from grain during winnowing?Read the answer and worked solution →Winnowing usually follows which step of grain preparation?Read the answer and worked solution →In simple winnowing, what carries away the lighter chaff?Read the answer and worked solution →Winnowing works because grain and chaff differ in which property?Read the answer and worked solution →Which hand tool is a shaped basket shaken to raise chaff?Read the answer and worked solution →Which country first developed the rotary winnowing fan?Read the answer and worked solution →What did a rotary winnowing fan use to produce an airstream?Read the answer and worked solution →What was the winnowing machine of 1737 by Andrew Rodger called?Read the answer and worked solution →How did early farmers winnow grain when there was no wind?Read the answer and worked solution →Winnowing barns in South Carolina raised yields of which crop?Read the answer and worked solution →Opposed doorways in old barns helped winnowing by creating what?Read the answer and worked solution →What is threshing?Read the answer and worked solution →Threshing comes in grain preparation after which step?Read the answer and worked solution →Does threshing remove the bran from the grain?Read the answer and worked solution →Which threshing tool is two connected sticks used to beat grain?Read the answer and worked solution →Who invented the threshing machine in 1786?Read the answer and worked solution →Which modern machine harvests, threshes and winnows in the field?Read the answer and worked solution →A threshing bee was a gathering where local people did what?Read the answer and worked solution →When grain was tossed in wind, where did the best grain fall?Read the answer and worked solution →What is a sieve used for?Read the answer and worked solution →Why is a sifter used with dry flour in cooking?Read the answer and worked solution →A strainer is a form of sieve that separates what from a liquid?Read the answer and worked solution →Sieving separates particles on the basis of what?Read the answer and worked solution →Sieves can be used to separate stones from which material?Read the answer and worked solution →A sieve for sifting flour has holes of what kind?Read the answer and worked solution →In sieving, which particles are retained by the screen?Read the answer and worked solution →A colander is typically what kind of kitchen tool?Read the answer and worked solution →A tea strainer is intended for use when doing what?Read the answer and worked solution →What is a zaru used in Japanese cooking?Read the answer and worked solution →Why is wood chosen for some sieves used in sampling?Read the answer and worked solution →

Worked practice questions

What is separated from grain during winnowing?

  1. Chaff
  2. Bran
  3. Husk oil
  4. Soil water
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Correct answer: A. Chaff

1. Recall the idea: Winnowing removes chaff, the light dry covering, from the grain. 2. The correct choice is: Chaff. 3. The other options describe different methods or properties and do not fit this fact. _Source: Wikipedia, Winnowing_

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Winnowing usually follows which step of grain preparation?

  1. Reaping
  2. Milling
  3. Sowing
  4. Threshing
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Correct answer: D. Threshing

1. Recall the idea: Grain is first threshed to loosen it, then winnowed to remove chaff. 2. The correct choice is: Threshing. 3. The other options describe different methods or properties and do not fit this fact. _Source: Wikipedia, Winnowing_

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In simple winnowing, what carries away the lighter chaff?

  1. Water
  2. Magnets
  3. Wind
  4. Heat
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Correct answer: C. Wind

1. Recall the idea: The mixture is thrown into the air and wind blows the light chaff away. 2. The correct choice is: Wind. 3. The other options describe different methods or properties and do not fit this fact. _Source: Wikipedia, Winnowing_

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