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प्रश्न
What is E-waste?
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उत्तर १
- Electronic waste refers to various forms of electric and electronic equipment that have ceased to be of any value to its users because they have exhausted their utility value due to redundancy, replacement, or breakage.
- E-waste is valuable as a source for secondary raw material but hazardous if treated and discarded improperly.
- Uncontrolled burning and disposal of e-waste cause environmental problems.
- E-waste presents difficulties for recycling due to the complexity of each item and the lack of viable recycling systems.
उत्तर २
E-waste refers to discarded electronic devices like computers and phones.
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संबंधित प्रश्न
List some of the common wastes produced in mining operation and mention how these can be reused.
Match the items in Column I with as many times as possible in Column II.
|
Column I |
Column II |
|
1. Cow dung |
(i) Sugarcane |
|
2. Bagasse |
(ii) Raddiwalas |
|
3. Old newspapers |
(iii) Manure |
What are Composting ? Explain its Process
What do we do to the useful components (biodegradable) of the garbage?
Read the items mentioned in Columns I and II and fill in the related process in the Column III
| Column I | Column II | Column III | |
| (a) | Organic waste | Earthworms | (i) ______ |
| (b) | Garbage | Dig pit and fill with garbage |
(ii) ______ |
| (c) | Old newspaper | Paper bags | (iii) ______ |
Correct the definition of certain terms given below by changing only one word.
Compost: Substances converted into manure for use in industries.
Beera, a farmer would clear his field everyday, and burn dry leaves fallen on the ground. After sometime he found that those living in huts near his field were suffering from cough and breathing problems.
- Can you explain why?
- Also suggest an environment friendly way to dispose the dry leaves.
Beautiful hand crafted articles like boxes and toys are made of paper pulp in our country. Can you explain how paper pulp which is made from paper can be used to make hard boxes and other articles?
What happens when tea leaves, cotton swabs and old soft toys are thrown into the drain?
