NCERT Solutions for Class-6 Science Chapter-4 Sorting Materials into Groups

NCERT TEXTBOOK EXERCISES

Question 1. Name five objects which can be made from wood.
Answer:
1. Table
2. Chair
3. Bed
4. Stool
5. Almirah

Question 2. Select those objects from the following which shine: Glass bowl, plastic toy, steel spoon, cotton shirt.
Answer : Among these, 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 material and a given material could be used for making many objects.

Object	Materials
Book	Glass
Tumbler	Wood
Chair	Paper
Toy	Leather
Shoes	Plastics

Answer :

Object	Materials
Book	Paper
Tumbler	Glass
Chair	Wood
Toy	Plastics
Shoes	Leather

Question 4. State whether the statements given below are True of False ?
(1) Stone is transparent, while glass is opaque.
(2) A notebook has lustre while eraser does not.
(3) Chalk dissolves in water.
(4) A piece of wood floats on water.
(5) Sugar does not dissolve in water.
(6) Oil mixes with water.
(7) Sand settles down in the water.
(8) Vinegar dissolves in water.
Answer:
(1) False
(2) False
(3) False
(4) True
(5) False
(6) False
(7) True
(8) True

Question 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
Answer :
(a) (i) Round-shaped: Basketball, orange, globe, earthen pitcher.
     (ii) Other shapes: Water, sugar, apple.
(b) (i) Eatables: Water, orange, sugar, apple.
     (ii) Non-eatables: Basketball, globe, earthen pitcher.

Question 6. List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
Answer:
1. Oil
2. Paper
3. Wood
4. Plastic mug
5. Plastic plate
6. Leaves
7. Ice
8. Wax

Question 7. Find the odd one out from the following:
(a) Chair, Bed, Table, Baby, Cupboard
(b) Rose, Jasmine, Boat, Marigold, Lotus
(c) Aluminium, Iron, Copper, Silver, Sand
(d) Sugar, Salt, Sand, Copper sulphate
Answer :
(a) Baby (it is living while others are non-living).
(b) Boat (except it, all others are flowers).
(c) Sand (except it, all others are metals).
(d) Sand (except it, all others are soluble in water).