NCERT Solutions For Class 6 Science Chapter 4 Exercise
Chapter 4: Sorting Materials into Groups
1. Name five objects which can be made from wood.
Solution:
a) Table
b) Chair
c) Doors
d) Desk
e) Box
2. Select those objects which shine from the following:
Glass bowl, plastic toy, steel spoon, cotton shirt
Solution:
Glass bowl and steel spoon are the objects which shine.
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 material, and a given material could be used for making many objects.
Objects |
Material |
Book |
Glass |
Tumbler |
Wood |
| Chair | Paper |
| Toy | Leather |
| Shoes | Plastics |
Solution:
| Objects | Material |
| Book | Paper, wood |
| Tumbler | Glass, wood, plastic |
| Chair | wood, plastic |
| Toy | Glass, wood, paper, plastics, leather |
| Shoes | Leather, plastic |
4. State whether the statements given below are True or False.
(i) Stone is transparent, while glass is opaque.
(ii) A notebook has lustre while an eraser does not.
(iii) Chalk dissolves in water.
(iv) A piece of wood floats on water.
(v) Sugar does not dissolve in water.
(vi) Oil mixes with water.
(vii) Sand settles down in the water.
(viii) Vinegar dissolves in water.
Solution:
i) False
ii)False
iii) False
iv) True
v) False
vi) False
vii) True
viii) True
5. Given below are the names of some objects and materials:
Water, basketball, orange, sugar, globe, apple and earthen pitcher. Group them as:
(a) Round shaped and other shapes (b) Eatables and non-eatables
Solution:
(a) Round shaped – Basketball, Orange, Globe, Apple, Earthen Pitcher
Other shapes – Water, Sugar
(b) Eatables – Water, Orange, Sugar, Apple
Non-eatables – Basketball, Globe, Earthen Pitcher
6. List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
Solution:
A few items that float on water are as follows:
- Sponge’s piece
- Plastic bottle
- Paper’s piece
- Thermocol’s piece
- Wood
- Plastic ball
- Cork
However, these items will not float on oil or kerosene.
7. Find the odd one out from the following:
a) Chair, Bed, Table, Baby, Cupboard
b) Rose, Jasmine, Boat, Marigold, Lotus
c) Aluminum, Iron, Copper, Silver, Sand
d) Sugar, Salt, Sand, Copper Sulphate
Solution:
a) Baby – others are made up of wood
b) Boat – others are flowers
c) Sand – others are metals
d) Sand – others are soluble in water