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प्रश्न
Distinguish between.
Man made material and natural material.
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उत्तर
| S. No. | Natural materials | Man-made materials |
| 1. | Natural materials are those materials, which occur in nature on their own. | Man-made materials are a type of material that doesn't occur naturally and is made by humans. |
| 2. | They are both renewable and non-renewable in nature. | They are non-renewable in nature. |
| 3. | They help in the economic development of people. | They help in economic as well as social development. |
| 4. | They are eco-friendly. | They are not environmentally friendly. |
| 5. | They are not manufactured in factories. | They are manufactured in factories. |
| 6. | Examples: wood, rock, minerals, water, soil, etc. | Examples: glass, plastic, artificial thread, thermocol, etc. |
संबंधित प्रश्न
Fill in the blanks with appropriate words.
Like synthetic fibres, plastic is also a _______
Motor cars are coated with ____________.
Who is my partner?
| 'A' column | 'B' column |
| a. Lead glass | i. Plates |
| b. Bakelite | ii. Mattresses |
| c. Thermocol | iii. Electric bulb |
| d. Optic glass | iv. Electric switch |
| e. Polypropylene | v. Lens |
Write the natural or manmade raw material of the following items.
Mattress, glass vessel, bangle, chair, gunny bag, broom, knife, pen.
Write short note.
Glass production.
Can you replace the following packaging material with those which can be recycled or reused.
Glass tumblers packed in thermocol box.
Plastic articles are available in all possible shapes and sizes. Can you tell why?
What are the various methods of disposing of plastics?
The used plate is easy to recycle.
Answer the following by rearranging the jumbled letters :
One-time use plastics are also known as ______ plastics.
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