Sorting Materials Into Groups

NCERT TEXT BOOK EXERCISES

Q1. Name five objects which can be made from wood.

Ans. Five objects that can be made from wood are :

(i) Table

(ii) Chair

(iii) Bed

(iv) Door

(v) Bullock cart

Q2. Select those objects from the following which shine : Glass bowl, plastic toy, steel spoon, cotton shirt

Ans. Glass bowl and steel spoon

Q3. 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

Ans.

Object Material
Book Paper
Tumbler Glass, plastic
Chair Wood, plastic
Toy Wood, paper, plastic
Shoes 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 an eraser does not.

(iii) Chalk disAnsves in water.

(iv) A piece of wood floats on water.

(v) Sugar does not disAnsve in water.

(vi) Oil mixes with water.

(vii) Sand settles down in water.

(viii) Vinegar disAnsves in water.

Ans. (i) Stone is transparent, while glass is opaque. (False)

(ii) A notebook has lustre, while an eraser does not. (False)

(iii) Chalk disAnsves in water. (False)

(iv) A piece of wood floats on water. (True)

(v) Sugar does not disAnsve in water. (False)

(vi) Oil mixes with water. (False)

(vii) Sand settles down in water. (True)

(viii) Vinegar disAnsves in water. (True)

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.

Ans. (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.

Q6. List all items known to you that float on water. Check and see if they will float on oil or kerosene.

Ans. Some items that float on water are listed below :

1. Plastic bottle

2. Piece of paper

3. Piece of sponge

4. Piece of thermocol

5. Wood

6. Bamboo

7. Plastic ball

8. Cork

However, none of these items floats on oil or kerosene.

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

Ans. (a) Baby

(b) Boat

(c) Sand

(d) Sand

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