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प्रश्न
Write whether the given materials are hard or soft.
| Wood | Eraser | Cotton |
| ______ | ______ | ______ |
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उत्तर
| Wood | Eraser | Cotton |
| Hard | Soft | Soft |
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संबंधित प्रश्न
Very Short Answer Type Question:
Name two objects which are made from opaque materials.
Sand paper is a good example for smooth materials.
Sort the given objects as rough or smooth.
| Wet soap | Coir | Feather | Stone |
| ______ | ______ | ______ | ______ |
| Glass ball | Paperboard | Sand paper | Plastic spoon |
| ______ | ______ | ______ | ______ |
Name five objects which can be made from wood.
Chalk dissolves in water.
A piece of wood floats on water.
Sand settles down in the water.
Differentiate hard and soft materials.
Complete the crossword given in the figure with the help of the clues.
Across
1. Which is generally hard, ductile, malleable and sonorous.
2. A metal is called so it can be drawn into wires.
3. Metal bells are used because of this property.
Down
4. A metal generally used for making jewellery.
5. A metal which is liquid at room temperature.
6. A metal which reacts with acid as well as base to form hydrogen gas.
7. Substances used to enhance the growth of plants.
8. Property by virtue of which metals can be beaten into thin sheets.
Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants?
