1. Gold
2. Platinum
3. Silver
Which of the above is/are found in e-waste?
E-waste Precious Metal Components
Electronic waste, often called e-waste, is generated from discarded electronic devices. These devices frequently contain valuable precious metals.
Metals Found in E-waste:
- Gold (1): Utilized in printed circuit boards (PCBs), connectors, and CPUs due to its excellent conductivity and resistance to corrosion.
- Platinum (2): Found in some components like hard disk drives, conductive coatings, and specific sensors within electronics.
- Silver (3): Commonly used in switches, contacts, conductive pastes, and solders in electronic devices.
Conclusion:
Since Gold, Platinum, and Silver are all utilized in the manufacturing of electronic components, they are indeed found within e-waste streams. Therefore, all three listed items are present.
This aligns with Option C, which includes 1, 2, and 3.
Important Questions from Mechanism Of Disease
Which of the following are causes of acquired systemic amyloidosis ?
1. Tuberculosis
2. Multiple myeloma
3. Untreated rheumatoid arthritis
4. Chronic osteomyelitis
Select the correct answer using the code given below:
- As per the Gell and Coombs classification, Farmer's lung is which type of hypersensitivity disease ?
- Which one of the following hormones acts via the receptor tyrosine kinase?
- Peripheral Eosinophilia is not a characteristic feature of:
\(Na^+\)is reabsorbed in which part/parts of kidney ?
1. Proximal convoluted tubule
2. Distal convoluted tubule
3. Thick ascending limb of loop of Henle
4. Collecting duct
Select the correct answer using the code given below:
