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📚 Class VI Science 📘 NCERT Solutions Ch 9 - Methods of Separation in Everyday Life

Class VI NCERT solutions Methods of Separation in Everyday Life

Class VI Science • Curiosity

🔬 Chapter 9: Methods of Separation in Everyday Life

NCERT Solutions — Complete Question & Answer Guide

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📌 Key Concepts

✦ A mixture = two or more substances mixed together

✦ Handpicking: removing large impurities by hand

✦ Threshing: separating grain from stalks by beating

✦ Winnowing: separating husk from grain using wind

✦ Sieving: separating by size using a sieve

✦ Sedimentation & Decantation: heavy particles settle; clear liquid poured off

✦ Filtration: separating insoluble solids using a filter

✦ Evaporation: getting dissolved solid by heating (salt from sea water)

✦ Magnetic separation: using magnets (iron from sand)

📝 Let Us Enhance Our Learning

Q1 Why do we need to separate components of a mixture?
ANSWER
  • Remove unwanted/harmful substances (stones from rice)
  • Obtain useful components (butter from curd)
  • Get a pure substance (salt from sea water)
Q2 What is winnowing?
ANSWER

Winnowing

Separating lighter husk/chaff from heavier grain using wind or blowing air. Farmer drops mixture from height — husk blows away, grain falls down.

Q3 How to separate salt and sand?
ANSWER
  1. Add water — salt dissolves, sand doesn\'t
  2. Filter — sand stays on paper, salt water passes through
  3. Evaporate — water goes, salt remains
Q4 How to separate iron filings from sand?
ANSWER

Use magnetic separation. Move a magnet through the mixture — iron filings stick to the magnet, sand stays behind.

Q5 What is sedimentation and decantation?
ANSWER

Sedimentation: Heavy particles settle at the bottom when mixture is left still (mud in water).

Decantation: Carefully pouring clear liquid from top without disturbing sediment.

Q6 How is salt obtained from sea water?
ANSWER
  1. Sea water collected in shallow open pits
  2. Left in sun for days
  3. Water evaporates
  4. Salt crystals left behind
Q7 What is filtration? Daily life examples.
ANSWER

Filtration

Separating insoluble solids from liquid using a filter (paper, cloth, sieve).

Examples: Straining tea, water filter, draining cooked rice.

Q8 Match methods with mixtures.
ANSWER
MixtureMethod
Stones from riceHandpicking
Husk from grainWinnowing
Flour from branSieving
Tea leaves from teaFiltration
Iron pins from sandMagnetic separation
Salt from sea waterEvaporation
Butter from curdChurning
Mud from muddy waterSedimentation & Decantation
Q9 What is churning?
ANSWER

Churning = vigorous stirring/shaking of curd or cream to separate butter. Fat globules come together forming butter on top; remaining liquid = buttermilk (chhachh).

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