Textual Exercise: Sorting Materials Into Groups JKBOSE NCERT Solutions
Q1. Name five objects which can be made from wood.
Answer : Chair, Picture frame, black board, Guitar, Birdhouse
Q2. Select those objects from the following which shine
Glass bowl, plastic toy, steel spoon, cotton shirt
Answer: Glass Bowl and Steel Spoon
Q3. Match the objects given below with the materials from which they can be made. Remember, an object can be made from more than one material and a given material can be used for making many objects.
Answer:
| Objects | Materials |
| Book | Paper |
| Tumbler | Glass, Plastic |
| Chair | Plastic,Wood |
| Toys | Plastic,Wood |
| Shoes | Plastic,Leather |
Q4. State whether the statements given below are true or false.
(i) Stone is transparent, while glass is opaque.
(ii) A notebook has lustre while eraser does not.
(iii) Chalk dissolves in water.
(iv) A piece of wood floats on water.
(v) Sugar does not dissolve in water.
(vi) Oil mixes with water.
(vii) Sand settles down in water.
(viii) Vinegar dissolves in water.
Answer:
Answer: (i) False – Stone is opaque, while glass is transparent.
(ii) False – Both notebook and eraser do not have lustre.
(iii) False – Chalk can not dissolve in water.
(iv) True – A piece of wood can float on water.
(v) False – Sugar dissolves in water.
(vi) False – Oil does not mix with water.
(vii) True – Sand settles down in water.
(viii) True – Vinegar dissolves in water.
Q5. 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: Basket ball, orange, globe, apple and earthen pitcher.
Other shaped: Water and sugar
(b) Eatables: Orange, sugar, apple, water.
Non-eatables: Basket ball, globe, earthen pitcher.
Q6. List all the items known to you that float on water. Check and see if they will float on an oil or kerosene.
Answer: Objects that float on water are.
Paper, Cap of a plastic bottle, Cork, Foam and Leaf
Some of these objects may continue to float on oil or kerosene, whereas others may sink.
Q7. 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
(b) Boat
(c) Sand
(d) Sand
