Introduction
Before trying to attempt to answer the NCERT exercise questions, you should have a thorough understanding of class 6 Science chapter 2 i.e. ‘Sorting Materials Into Groups’.
If you haven’t understood the chapter yet, then worry not you can go through it easily and develop a crystal clear understanding of various concepts from our notes whose link has been provided below.
NCERT Excercise Questions & Answers
Que.1 Name five objects that can be made from wood.
Ans.1 Five objects that can be made from wood are:
- Door
- Windows
- Cart
- Boat
- Table and chair.
Que.2 Select those objects from the following that shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Ans.2 Among these objects only a glass bowl and steel spoon shine.
Que.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.
| Objects | Materials |
| Book | Glass |
| Tumbler | Wood |
| Chair | Paper |
| Toy | Leather |
| Shoes | Plastic |
Ans.3 The objects and their raw materials are:
| Objects | Materials |
| Book | Paper, wood, leather |
| Tumbler | Glass, plastic, wood |
| Chair | Wood, plastic |
| Toy | Glass, wood, paper, leather, plastic |
| Shoes | Leather, plastic |
Que. 4 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 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.
Ans. 4 (i) False. Glass is transparent or translucent whereas stone is opaque.
(ii) False. As both a notebook and an eraser don’t have a lustre.
(iii) False. Chalk is insoluble in water.
(iv) True. Wood is less denser than water.
(v) False. Sugar is soluble in water.
(Vi) False. Oil is insoluble in water.
(vii) True. The sand sinks into water as it is heavier or denser than water.
(viii) True. Vinegar is soluble in water.
Que. 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
Ans. 5 (a) Round-shaped: basketball, orange, globe, apple, and earthen pitcher.
Other shape: Water(shapeless), sugar
(b) Eatables: Orange, sugar, apple, water*
Non-eatable: basketball, globe, earthen pitcher.
Que. 6 List all items known to you that float on water. Check and see if they will float on
an oil or kerosene.
Ans. 6 A few items or objects that can float on water are:
- Wood
- Paper
- Oil
- Plastic bottles
- Ice, etc.
Items that will float on oil or kerosene are- wood, paper, and plastic bottles.
Items that will sink in oil or kerosene are- Oil (will dissolve), and ice will sink.
Que .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
Ans. 7 Items that are odd one out are:
(a) Baby. As the rest of them are non-living, a baby is living and made up of wood.
(b) Boat. As rest of them are flowers.
(c) Sand. As rest of them are metals.
(d) Sand. As rest of them are soluble in water and sand is insoluble in water.
References
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