NCERT Solutions for Class 6 Science Chapter 4 Sorting Material Into Groups

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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
• Window

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.
Answer: False

(ii) A notebook has lustre, while an eraser does not.
Answer: False
(iii) Chalk dissolves in water.
Answer: False
(iv) A piece of wood floats on water.
Answer: True
(v) Sugar does not dissolve in water.
Answer: False
(vi) Oil mixes with water.
Answer: False
(vii) Sand settles down in water.
Answer: True
(viii) Vinegar dissolves in water.
Answer: True

Page No: 34

5. Given below are the names of some objects and materials:
Water, basket ball, orange, sugar, globe, apple, and earthen pitcher
Group them as:
(a) Round shaped and other shapes
(b) Eatables and non-eatables

Answer:
(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.
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.

7. Find the odd one out from the following:

(a) Chair, Bed, Table, Baby, Cupboard
Answer: Baby as it is living being while others are non-living.

(b) Rose, Jasmine, Boat, Marigold, Lotus
Answer: Boat as it is used for transportation purpose while others are flowers.

(c) Aluminium, Iron, Copper, Silver, Sand
Answer: Sand as it non-metal while others are metals.

(d) Sugar, Salt, Sand, Copper sulphate
Answer:Sand as it is insoluble in water while others are soluble in water.