UPSC Current Affairs Quiz: March 24, 2025

• Birefringent materials can exhibit different refractive indices in different directions. Correct: These materials have unique crystal structures that allow them to slow light differently based on the direction of propagation, leading to multiple refractive indices.
• Birefringence can be induced by applying physical stress or exposing materials to electric fields. Correct: Physical stress or exposure to electric or magnetic fields can modify the birefringence of materials, affecting their optical properties.

• SSPE is primarily caused by a bacterial infection following measles. Incorrect: SSPE is not caused by a bacterial infection; it is a progressive neurological disorder that occurs after a person has had measles, specifically due to the persistence of the measles virus in the brain, not a bacterial cause.
• SSPE can be completely cured with timely medical intervention. Incorrect: Currently, there is no permanent cure for SSPE. Treatments may slow its progression, but they do not provide a complete cure.

The given UNESCO World Heritage Sites in India from south to north: 

1. Sacred Ensembles of the Hoysala (Karnataka)
2. Ramappa Temple (Telangana)
3. Khajuraho Temples (Madhya Pradesh)
4. The Architectural Work of Le Corbusier (Chandigarh, Punjab/Haryana)

• The Bar Council of India prohibits advocates from using social media for advertising their services. Correct: The Bar Council of India has issued warnings against advocates advertising their services through social media, emphasizing the need to maintain the integrity of the legal profession.
• The Bar Council of India has no authority over foreign-based content creators. Correct: The BCI’s jurisdiction does not extend to foreign-based content creators, making it challenging to regulate unethical legal advertisements that originate outside India.