Sorting Materials into Groups
Chapter – 4
Exrecises (অনুশীলনী)
- 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.
- 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.
- 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- 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.
- 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.
- 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.
- 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.