Students can download Chapter 4 Sorting Materials into Groups KSEEB Solutions for Class 6 Science helps you to revise the complete syllabus.
Karnataka State Syllabus Class 6 Science Chapter 4 Sorting Materials into Groups
Class 6 Science Sorting Materials into Groups NCERT Textbook Questions and Answers
Question 1.
Name five objects which can be made from wood.
Answer:
Table, Chair, Doors, Boat, Bed.
Question 2.
Select those objects from the following which shine: Glass bowl, plastic toy, steel spoon, cotton shirt.
Answer:
Glass bowl and steel spoon are shining objects.
Question 3.
Match the objects given below with the materials from which they could be made. Remember, an object could be made from more than one materials and a given material could be used for making many objects.
Objects | Materials |
Book | Glass |
Tumbler | Wood |
Chair | Paper |
Toy | Leather |
Shoes | Plastics |
Answer:
Objects | Materials |
Tumbler | Glass and plastic Wood |
Chair | Wood and plastic Paper |
Book | Paper |
Toy | Plastic and Wood |
Shoes | Leather |
Question 4.
State whether the statements given below are true or false.
a) Stone is transparent, while glass is opaque. (False)
b) A notebook has lustre while eraser does not. (False)
c) Chalk dissolves in water. (False)
d) Apiece of wood floats on water (True)
e) Sugar does not dissolve in water. (False)
f) Oil mixes with water. (False)
g) Sand settles down in water. (True)
h) Vinegar dissolves in water. (True)
Question 5.
Given below are the names of some objects and material: water, basket ball, orange, sugar, globe, apple and earthen pitcher Group them as:
a) Round shaped and other shapes.
b) Eatable and non – eatables.
Answers:
(a) Round shaped | Other shaped |
Basket ball | Apple |
Apple | Sugar |
Orange | |
Globe | |
Earthen pitcher |
(b) Eatable | Non eatable |
Water | Basket ball |
Orange | Globe |
Sugar | Earthen pitcher |
Apple |
Question 6.
List all items known to you that float on water. Check and see if they will float on oil or kerosene.
Answer:
(a) List of some items that float on water:
1) Paper
2) Wood
3) Thin plastic sheet
4) Wax
5) Ice
6) Thermocol
7) Oil Lotus.
(b) List of items that float on kerosene Boat (all other are flowers)
1) Paper
2) Plastic
3) Wax
4) Thermocol
5) Wood Sand
(c) List of items that float on kerosene
1) Paper Sand
2) Thermocol
Class 6 Science Sorting Materials into Groups Additional Important Questions and Answers
I. Choose the correct answer.
Question 1.
Which of the following is lustrous material.
a) Wood
b) Plastic
c) Copper
d) Chalk
Answer:
c) Copper
Question 2.
Materials that are difficult to compress are called ___
a) Hard materials
b) Soft materials
c) Sponge materials
d) None of these
Answer:
a) Hard materials
Question 3.
Which of the following will float on water
a) Iron nails
b) Dry leaves
c) Stone
d) Steel
Answer:
b) Dry leaves
Question 4.
Find the odd one
a) Sugar
b) Salt
c) Water
d) Sand
Answer:
d) Sand
Question 5.
Butter paper is
a) Transparent
b) Oily
c) Opaque
d) Translucent
Answer:
d) Translucent
Question 6.
A liquid which contains the dissolved material is known as
a) Solvent
b) Solution
c) Solute
d) None of these
Answer:
a) Solvent
Question 7.
Which of the following insoluble in water
a) Oxygen
b) Sugar
c) Salt
d) Sawdust
Answer:
d) Sawdust
Question 8.
As you cannot see through objects made from materials, such materials are called ___
a) Transparent
b) Opaque
c) Translucent
d) None of these
Answer:
b) Opaque
Question 9.
A material which does not dissolve completely in water is called ___
a) Soluble
b) insoluble
b) Opaque
d) translucent
Answer:
b) insoluble
Question 10.
Find the odd one
a) Jasmine
b) Rose
c) Potato
d) Lily
Answer:
c) Potato
II Match the following
A |
B |
1) Iron | a) Shoes, Belt |
2) Wood | b) Chair, buckets |
3) Leather | c) Tables, door, mesh |
4) Cotton | d) Plough, Bullock cart |
5) Plastic | e) Bed, pillows, dress |
Answers:
1 – c,
2 – d,
3 – a,
4 – e,
5 – b
III. Answer the following
Question 1.
Why do we require to group materials ? Give reason.
Answer:
It helps to describe their properties when we group materials for our convenience.
Question 2.
Is oil soluble in water ?
Answer:
Oil does not dissolve in water so it is insoluble in water but floats on the surface of water.
Question 3.
What is the common property between salt and sand ?
Answer:
Both have mass and are in solid state.
Question 4.
Write two gases which are soluble in water.
Answer:
Oxygen and carbon dioxide.
Question 5.
Name two gases which are insoluble in water ?
Answer:
Hydrogen and nitrogen
Question 6.
Write any four properties of materials.
Answer:
a) Appearance
b) Hardness
c) Solubility
d) Float or sink in water
e) Transparency
Question 7.
What are the similarities between iron, copper and aluminium ?
Answer:
a) They all have lustre
b) They are all metals
c) They are hard
Question 8.
Make a table of objects and the materials they are made of Plate, Pen, Bucket, Knife
Answer:
Question 9.
Name the naturally occuring hardest substance known.
Answer:
Diamond, it is made up of carbon.
Question 10.
Why is water called a universal solvent ?
Answer:
Water dissolves a large number of substances in it, so it is called universal solvent.
Question 11.
Make a table and find out whether the following materials mix with Water: vinegar, lemon juice, mustard oil, coconut oil, Kerosene.
Answer:
Question 12.
Grouping of objects helps the shop – keeper Justify the statement.
Answer:
Proper grouping of objects helps shopkeeper in the following ways.
a) He can locate the required object easily and quickly.
b) He can easily come to know what stocks are going to finish and he should purchase them for his customers.
Question 13.
Write an experiment to show that our palm is translucent.
Answer:
Cover the glass of a torch with your palm at a dark place. Switch on the torch, and observe from the other side of palm. We see that the light of torch passes through palm but not clearly. This experiment shows that our palm becomes translucent when a strong beam of light passes through it.
Question 14.
Metals generally occur in solid state and are hard. Name a metal that exists in liquid state and a metal that is soft & can be cut with knife. Mercury is a metal that exists in liquid state. Sodium and potassium are soft metals
and can be cut with knife.
Question 15.
Mention some materials which are made up of paper.
Answer:
Books, notebooks, newspaper, toys, calenders etc.