Advertisements
Advertisements
Question
Why is e-waste harmful? Express your opinion about this.
Solution
- E-waste refers to electronic wastes, that include old and discarded electric appliances, such as computers, TVs, refrigerators, cell phones, electronic toys, batteries, etc. Most of the electronic waste is generated in cities, however, due to a faster rate of development and improved lifestyle, small towns and villages are also contributing to e-waste generation.
- E-wastes is very dangerous and polluting as it contains many harmful substances, such as plastics, lead, cadmium, and mercury. These substances are not just non-biodegradable, but they also result in several life-threatening diseases, including cancer. Many of these harmful metals can enter the food chain and result in bioaccumulation.
APPEARS IN
RELATED QUESTIONS
We often observe domestic waste decomposing in the bylanes of our homes. List four ways to make the residents aware that the improper disposal of wastes is harmful to the environment and also for their own health.
Why are some substances biodegradable and some non-biodegradable?
Give a method for the disposal of household wastes such as left-over food, fruit and vegetable peels, and leaves of potted plants.
What is meant by incineration? for what purpose is it used?
Define electronic waste and list at least six items which come under this category.
What does mining waste comprise of?
The question has four options. Choose the correct answer:
Which one is the most toxic?
What do you do with the leftover food at home?
Do you think it is better to use compost instead of chemical fertilizers? Why?
Which of the following is biodegradable waste?
Which of the following is biodegradable?
Read the items mentioned in Columns I and II and fill in the related process in Column III
| Column I | Column II | Column III | |
| (a) | Organic waste | Earthworms | (i) ______ |
| (b) | Garbage | Dig pit and fill it with garbage | (ii) ______ |
| (c) | Old newspaper | Paper bags | (iii) ______ |
To what use can you put the following kind of garbage and how?
old newspapers
Beera, a farmer would clear his field every day, and burn dry leaves fallen on the ground. After some time he found that those living in huts near his field were suffering from cough and breathing problems.
(i) Can you explain why?
(ii) Also suggest an environment-friendly way to dispose of the dry leaves.
Put a tick (√) against the garbage items given in Table 16.1 which could be converted into manure. Put a cross (×) against the others.
| Garbage Items | Make manure or not | |
| (i) | Eggshells | |
| (ii) | Straw | |
| (iii) | Dry flowers | |
| (iv) | Pebbles | |
| (v) | Broken pieces of glass | |
| (vi) | Nails and screws | |
| (vii) | Plastic bangles | |
| (viii) | Leftover food | |
| (ix) | Steel broken vessel | |
| (x) | Dead animals |
List two classes into which garbage is classified.
Which of the following is non-biodegradable?
