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Question
Find the odd one.
Umbrella, sponge, rain coat, jerkin
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Solution
Sponge.
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Short Answer Type Question:
What is the reason for grouping materials?
Find the odd one.
brick, coir, silk cloth, pine apple
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Sand paper is a good example for smooth materials.
A notebook has lustre while an eraser does not.
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Name some examples for shiny materials?
Match the substances in Column A with their applications given in Column B.
|
Column A |
Column B |
| (a) oxygen | (i) for making crackers |
| (b) copper | (ii) for disinfecting water |
| (c) sulphur | (iii) all living beings inhale during breathing |
| (d) iron | (iv) for making electric wires |
| (e) chlorine | (v) for making rails |
While doing an activity in class, the teacher asked Paheli to handover a transluscent material. Which among the following materials will Paheli pick and give her teacher?
Match the objects given in Column I with the materials given in Column II.
| COLUMN I | COLUMN II | ||
| (a) | Surgical instruments | (i) | Plastic |
| (b) | Newspaper | (ii) | Animal product |
| (c) | Electrical switches | (iii) | Steel |
| (d) | Wool | (iv) | Plant product |
