Sorting Materials into Groups
Chapter - 4
Exrecises (অনুশীলনী)
1. Name five objects which can be made from wood.
Ans:- The names of the five items made of wood are chairs, tables, benches and cupboards.
2. Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Ans:- The objects that shine are glass bowls and steel spoons.
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.
Ans:- Books - Papers
Glass - glass
Chair - Wood
Toys - Plastic
Shoes - leather
4. State whether the statements given below are true or False.
(i) Stone is transparent, while glass is opaque.
Ans:- False.
(ii) A notebook has lustre while craser does not.
Ans:- False.
(iii) Chalk dissolves in water.
Ans:- True.
(iv) A piece of wood floats on
Ans:- True.
(v) Sugar does not dissolver in water.
Ans:- False.
(vi) Oil mixes with water.
Ans:- False.
(vii) Send settles down in water.
Ans:- True.
(viii) Vinegar dissolves in water.
Ans:- True.
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
Ans:- (a) Round: Basketball, Orange, Globe, Apple and Earth Pitcher.
Other forms: water and sugar.
(b) Fit for drinking: water, oranges, sugar and apples.
Unfit to eat: Basketball, Globes and Ground Pitchers.
6. List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
Ans:- The names of the water-soaked things I know are bamboo, plastic, tree leaves, bird's wings, oil, ball, etc.
7. Find the odd one out from the following:
(a) Chair, Bed, Table, Baby, Cupboard
Ans:- Baby.
(b) Rose, Jasmine, Boat, Marigold, Lotus
Ans:- Boat.
(c) Aluminium, Iron, Copper, Silver, Sand
Ans:- Sand.
(d) Sugar, Salt, Sand, Copper sulphate
Ans:- Copper sulphate.
Answer by:- Sourabh Bora
