science - separation of substances

Class 6 - Science

Separation of Substances

Q&A
Question:

What is winnowing? Where is it used?

Answer:

Winnowing is used to separate heavier and lighter components of a mixture by wind or by blowing air. This process is used by farmers to separate lighter husk particles from heavier seeds of grain.

ncert-solutions-for-class-6th-science-chapter-5-separation-of-substances-2



--- >>>

Questions and Answers


Separation of Substances - Questions
1.

What do you mean by threshing? Where is it used?


Answer
2.

What is Sieving? Where can it be used?


Answer
3.

Define the term handpicking.


Answer
4.

True or false?
(a) A mixture of milk and water can be separated by filtration.
(b) A mixture of powdered salt and sugar can be separated by the process of winnowing.
(c) Separation of sugar from tea can be done with filtration.
(d) Grain and husk can be separated with the process of decantation.


Answer
5.

You are given a mixture of salt and sand. Can you separate them by picking?


Answer
6.

What types of material can we separate by using handpicking?


Answer
7.

Name the process used to separate heavier and lighter components of a mixture.


Answer
8.

What is evaporation?


Answer
9.

What is mixture?


Answer
10.

How will you separate husk or dirt particles from a given sample of pulses before cooking?


Answer
11.

How will you separate mango from a mixture of mango and apple?


Answer
12.

Name the method used to separate the pieces of stone from grain.


Answer
13.

Name the method used to separate the pieces of stone from grain.


Answer
14.

Write opposite process of evaporation.


Answer
15.

What is mixture?


Answer
16.

Write various methods of separation of components from their mixture.


Answer
17.

What is threshing?


Answer
18.

What is decantation?


Answer
19.

Explain the method that can be used for separating the following mixture:
(i) Sand and husk
(ii) Wheat, sugar and stalk
(iii) Water and petrol
(iv) Rice and salt
(v) Sand and salt


Answer
20.

Why do we need to separate different components of a mixture? Give two examples.


Answer
21.

What is winnowing? Where is it used?


Answer
22.

What is strainer?


Answer
23.

How can you separate grains from stalk?


Answer
24.

How can you separate grains from stalk?


Answer
25.

How will you separate sand and water from their mixture?


Answer
26.

Fill in the blanks:
(a) The method of separating seeds of paddy from its stalks is called .
(b) When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of separating cream from milk is an example  of ______.  
(a) Salt is obtained from sea water by the process of ____________ .
(b) Impurities settled at the bottom when muddy water was kept overnight in a  bucket. The clear water was then poured off from the top. The process of separation used in this example is called ____________.


Answer
27.

Name the method used to separate cream from curd.


Answer
28.

Define condensation.


Answer
29.

Match the column:

ncert-solutions-for-class-6th-science-chapter-5-separation-of-substances-s10


Answer
30.

Describe the method to obtain salt from sea water.


Answer
31.

How will you prepare cheese (paneer)?


Answer
32.

How will you separate mango from a mixture of mango and apple?


Answer
33.

Name the other methods used to separate solid materials of different size.


Answer
34.

Name the method by which we get salt from ocean water.


Answer
35.

Write three methods of separation.


Answer
36.

How will you separate oil and water from their mixture?


Answer
37.

What is evaporation?


Answer
38.

Where is decantation used? Give two examples.


Answer
39.

Is it possible to separate sugar mixed with wheat flour? If yes, how will you do it?


Answer
40.

Name the method used to separate cream from curd.


Answer
41.

Define winnowing.


Answer
42.

What do you mean by sieving? Give an example.


Answer
43.

Lemonade is prepared by mixing lemon juice and sugar in water. You wish to add ice to cool it. Should you add ice to the lemonade before or after dissolving sugar ? In which case would it be possible to dissolve more sugar ?


Answer
44.

How would you obtain clear water from a sample of muddy water?


Answer
45.

True or false?
(a) A mixture of milk and water can be separated by filtration.
(b) A mixture of powdered salt and sugar can be separated by the process of winnowing.
(c) Separation of sugar from tea can be done with filtration.
(d) Grain and husk can be separated with the process of decantation.


Answer
46.

Can the above stated method be used if both the components have same weight?


Answer
47.

How will you separate oil and water from their mixture?


Answer
48.

What is strainer?


Answer
General Knowledge Quiz
3001 Bizarre Facts
Dictionary
Elementary English Grammar Test
Standard English Grammar Test
Advanced English Grammar Test
Daily English Quiz
English Test
Grammar Examination
ESL / EFL Test
Grammar Test
Antonyms
Synonyms
Homonyms
Vocabulary Examination
Word Analogy
Vocabulary Flashcards
Idioms
Idioms Quiz
Quantitative Aptitude Test
iQ Quiz Game
Verbal Reasoning Quiz - Mind Game
English Question Answer
Vocabulary Game 1
Vocabulary Game 2
Scramble Word Game
Common Mistakes
Confusing Words
Basic English Usage
English Grammar
Prepositions
English Phrases
Learn English
Word Game
Interview Questions and Answers
Educational Quiz Games