UPSC Current Affairs Quiz: March 24, 2025
March 24, 2025 March 24, 2025
1. With reference to the Birefringence, consider the following statements:
- Birefringent materials can exhibit different refractive indices in different directions.
- Birefringence can be induced by applying physical stress or exposing materials to electric fields.
Which of the above statements is/are correct?
[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: C [Both 1 & 2]
Notes:- 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.
2. With reference to Subacute Sclerosing Panencephalitis (SSPE), consider the following statements:
- SSPE is primarily caused by a bacterial infection following measles.
- SSPE can be completely cured with timely medical intervention.
Select the correct option from the codes given below:
[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: D [Neither 1 nor 2]
Notes:- 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.
3. Consider the following UNESCO World Heritage Sites from India:
- The architectural work of le corbusier
- Khajuraho Temples
- Ramappa Temple
- Sacred ensembles of the Hoysala
Which of the following is the correct order of the above sites from south to north?
[A] 1 2 3 4
[B] 1 3 2 4
[C] 4 3 2 1
[D] 2 4 1 3
Show Answer
Correct Answer: C [4 3 2 1 ]
Notes:The given UNESCO World Heritage Sites in India from south to north:
- Sacred Ensembles of the Hoysala (Karnataka)
- Ramappa Temple (Telangana)
- Khajuraho Temples (Madhya Pradesh)
- The Architectural Work of Le Corbusier (Chandigarh, Punjab/Haryana)
4. With respect to legal advertising practices, which of the following observations is/are correct?
- The Bar Council of India prohibits advocates from using social media for advertising their services.
- The Bar Council of India has no authority over foreign-based content creators.
Select the correct option from the codes given below:
[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: C [Both 1 & 2]
Notes:- 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.
5. Consider the following:
- Lithium
- Potassium
- Sodium
Which of the above is/are alkali metals?
[A] Only 1 & 2
[B] Only 2
[C] 1, 2 and 3
[D] Only 1
Show Answer
Correct Answer: C [1, 2 and 3]
Notes:
1. Lithium (Li) is the lightest metal and has atomic number 3. It is used in batteries and mood stabilizers. 2. Potassium (K) has atomic number 19 and is essential for biological functions, including nerve transmission. 3. Sodium (Na) has atomic number 11, is vital for fluid balance in the body, and is commonly found in table salt. All three elements are part of Group 1 in the periodic table, known as alkali metals, characterized by their high reactivity and formation of strong bases with water.
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