Advertisements
Advertisements
Question
In the E-waste generated by the Mobile Phones, which among the following metal is most abundant?
Options
Copper
Silver
Palladium
Gold
Advertisements
Solution
Copper
RELATED QUESTIONS
Every household produces a lot of material A daily. In one of the methods of disposal B, material A is burned at a very high temperature of about 1000°C in a structure called C. During this process, the organic matter present is removed as D and E whereas F is left behind (which can be dumped in a landfill site).
(a) What is material A?
(b) Name the method of disposal B.
(c) What is structure C known as?
(d) What are (i) D (ii) E, and (iii) F?
(e) This method is especially suitable for the disposal of materials produced by certain institutions. Name such institutions.
Explain the difference.
Degradable and non-degradable waste
Match the items in column ‘A’ with the proper ones in column ‘B’ and explain their impact on the environment.
| Column ‘A’ | Column ‘B’ |
| 1. Harmful waste | a. Glass, rubber, carry bags, etc. |
| 2. Domestic waste | b. Chemicals, pigments, ash, etc. |
| 3. Biomedical waste | c. Radioactive material |
| 4. Industrial waste | d. Leftover food, vegetables, peelings of fruits. |
| 5. Urban waste | e. Bandages, cotton, needles, etc. |
What is known as waste?
Explain the role of government in waste management.
What are the sources of solid wastes? How are solid wastes managed?
Discuss the role of an individual to reduce environmental pollution.
Which of the following substances will not be converted to compost when added in a composting pit?
Paheli gave the following ill effects of the practice of burning dried leaves and other plant parts
- Burning degrades the soil.
- Burning produces harmful gases/fumes.
- Precious raw materials to obtain manure at low cost is lost.
- Lot of heat is generated unnecessarily.
The correct reasons of why we should not burn leaves are
Provide a suitable term that expresses the meaning of the following statement.
Contents of the waste bins.
