NCERT Solutions for Class 6th: Ch 4 Sorting materials into groups Science
Page No: 33
Exercises
1. Name five objects which can be made from wood.
Answer
Five objects which can be made from wood
• Table
• Chair
• Desk
• Door
•
2. Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Answer
Glass, bowl, steel spoon
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.
Answer
4. State whether the statements given below are 'True' or 'False'.
(i) Stone is transparent, while glass is opaque.
► False
• Table
• Chair
• Desk
• Door
•
2. Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Answer
Glass, bowl, steel spoon
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.
Object
|
Material
|
| Book | Glass |
| Tumbler | Wood |
| Chair | Paper |
| Toy | Leather |
| Shoes | Plastics |
Answer
Object
|
Material
|
| Book | Paper |
| Tumbler | Glass, Plastic |
| Chair | Wood, Plastic |
| Toy | Wood, Paper, Plastic |
| Shoes | Leather |
4. State whether the statements given below are 'True' or 'False'.
(i) Stone is transparent, while glass is opaque.
► False
(ii) A notebook has lustre, while an eraser does not.
► False
(iii) Chalk dissolves in water.
► False
(iv) A piece of wood floats on water.
► True
► True
(v) Sugar does not dissolve in water.
► False
► False
(vi) Oil mixes with water.
► False
► False
(vii) Sand settles down in water.
► True
► True
(viii) Vinegar dissolves in water.
► True
Page No: 34
5. Given below are the names of some objects and materials:
Water, basket ball, orange, sugar, globe, apple, and earthen pitcherGroup them as:
(a) Round shaped and other shapes
(b) Eatables and non-eatables
Answer
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.
Answer
Sponge's piece, Plastic Bottle, Paper's piece, Thermocol's piece, Wood, Plastic ball, Cork are the known to you that float on water. No, they will not float on an oil or kerosene.
(a) Chair, Bed, Table, Baby, Cupboard
► Baby as it is living being while others are non-living.
(b) Rose, Jasmine, Boat, Marigold, Lotus
► Boat as it is used for transportation purpose while others are flowers.
(c) Aluminium, Iron, Copper, Silver, Sand
► Sand as it non-metal while others are metals.
(d) Sugar, Salt, Sand, Copper sulphate
►Sand as it is insoluble in water while others are soluble in water.