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प्रश्न
Sort the given objects as rough or smooth.
| Wet soap | Coir | Feather | Stone |
| ______ | ______ | ______ | ______ |
| Glass ball | Paperboard | Sand paper | Plastic spoon |
| ______ | ______ | ______ | ______ |
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उत्तर
| Wet soap | Coir | Feather | Stone |
| Smooth | Rough | Smooth | Rough |
| Glass ball | Paperboard | Sand paper | Plastic spoon |
| Smooth | Smooth | Rough | Smooth |
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संबंधित प्रश्न
Very Short Answer Type Question:
Select a lustrous material out of the following substances.
Very Short Answer Type Question:
Which material is generally used for making pens? Wood, aluminum, plastic, cotton
Short Answer Type Question:
What is the reason for grouping materials?
Find the odd one.
brick, coir, silk cloth, pine apple
Match the objects that are made of the same material.
| A | B | C |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Choose the odd one:
What is material?
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 |
Fill in the blanks to complete the following paragraph.
The name of the product formed in the reaction of sulphur and ______ is sulphur dioxide gas. When sulphur dioxide is dissolved in ______, sulphurous acid is formed. The sulphurous acid turns ______ litmus paper to ______. Generally oxides of ______ are acidic in nature.
After completing the paragraph, write two questions which you can raise on the basis of this information.
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 |
