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प्रश्न
Stone is transparent, while glass is opaque.
विकल्प
True
False
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उत्तर
This statement is False.
संबंधित प्रश्न
Very Short Answer Type Question:
Why do we need to group materials? Give one reason.
Short Answer Type Question:
What are the similarities between iron, copper, and aluminium?
Find the odd one.
brick, coir, silk cloth, pine apple
Find the odd one.
Umbrella, sponge, rain coat, jerkin
Choose the odd one:
What is material?
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.
Which pair of substances among the following would float in a tumbler half filled with water?
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 |
