UPSC Exam  >  UPSC Notes  >  NCERT Summary: UPSC  >  Short Questions: Separation of Substances

Short Questions: Separation of Substances | NCERT Summary: UPSC PDF Download

Q1: Define winnowing.
Ans: 
Winnowing is the process of separating heavy components from lighter components with the help of wind.

Q2: Define threshing.
Ans:
The term "threshing" refers to the process of removing grains from their stalks. The stalks are beaten to liberate the grain seeds in this process.

Q3: Define decantation.
Ans
: Decantation is the process of taking out clear water into a new container after sedimentation. The water after decantation is clear but it is still not fit for drinking.

Q4: Define condensation.
Ans:
Condensation is the process of turning water vapour into liquid.

Q5: Name 5 methods used for separating substances from their mixtures?
Ans:
Five methods used for separating substances are:

  • Winnowing
  • Sieving
  • Handpicking
  • Threshing
  • Decantation

Q6: What is sieving?
Ans: 
Sieving is the process of separating tiny particles from larger particles by the use of holes in a sieve.

Q7: Define sedimentation.
Ans:
Sedimentation is the process in which heavier components settle down at the bottom of the container. E.g. Water mixed with mud or sand.

Q8: Define evaporation.
Ans: 
Evaporation is the process of converting water into water vapour.

Q9: Define saturated solution.
Ans:
Saturated solution is a solution in which no more of a substance/solute can be dissolved.

Q10: Give one importance of separating substances from the mixtures.
Ans:
It is important to separate substances from mixtures to obtain pure substances differently for various purposes.

The document Short Questions: Separation of Substances | NCERT Summary: UPSC is a part of the UPSC Course NCERT Summary: UPSC.
All you need of UPSC at this link: UPSC
666 docs

Top Courses for UPSC

666 docs
Download as PDF
Explore Courses for UPSC exam

Top Courses for UPSC

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

ppt

,

Short Questions: Separation of Substances | NCERT Summary: UPSC

,

Objective type Questions

,

Short Questions: Separation of Substances | NCERT Summary: UPSC

,

Free

,

Exam

,

MCQs

,

video lectures

,

Summary

,

practice quizzes

,

shortcuts and tricks

,

Previous Year Questions with Solutions

,

pdf

,

Semester Notes

,

study material

,

Short Questions: Separation of Substances | NCERT Summary: UPSC

,

Important questions

,

Sample Paper

,

Viva Questions

,

mock tests for examination

,

past year papers

,

Extra Questions

;