In which of the following are lithium carbonate or its precursor derivatives used?
1. Production of cathode materials for lithium-ion batteries
2. Medical treatment of bipolar disorder and manic depression
3. Manufacturing of specialized heat-resistant glass and ceramics
1. Production of cathode materials for lithium-ion batteries
2. Medical treatment of bipolar disorder and manic depression
3. Manufacturing of specialized heat-resistant glass and ceramics
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Answer: D
1. Production of cathode materials for lithium-ion batteries — Correct Lithium carbonate is an important lithium compound used as a lithium source in the manufacture of cathode materials for lithium-ion batteries.
2. Medical treatment of bipolar disorder and manic depression — Correct Lithium carbonate is used as a mood stabiliser, particularly in the treatment and management of bipolar disorder and manic episodes.
3. Manufacturing of specialised heat-resistant glass and ceramics — Correct Lithium compounds are used in specialised glass and ceramic manufacturing because lithium can improve properties such as thermal shock resistance and thermal expansion characteristics.
Hence, option D is the correct answer.
1. Production of cathode materials for lithium-ion batteries — Correct Lithium carbonate is an important lithium compound used as a lithium source in the manufacture of cathode materials for lithium-ion batteries.
2. Medical treatment of bipolar disorder and manic depression — Correct Lithium carbonate is used as a mood stabiliser, particularly in the treatment and management of bipolar disorder and manic episodes.
3. Manufacturing of specialised heat-resistant glass and ceramics — Correct Lithium compounds are used in specialised glass and ceramic manufacturing because lithium can improve properties such as thermal shock resistance and thermal expansion characteristics.
Hence, option D is the correct answer.
Consider the following statements regarding Land Subsidence:
1. Reduction in pore-water pressure due to excessive groundwater extraction can
transfer a greater share of the overburden load to the sediment skeleton, resulting in irreversible compaction.
2. Subsidence caused by groundwater extraction is generally confined to the area immediately surrounding the pumping well and does not extend across wider aquifer systems.
3. Dissolution of soluble rocks beneath the surface can create underground cavities, potentially leading to sudden or progressive collapse of the overlying ground.
1. Reduction in pore-water pressure due to excessive groundwater extraction can
transfer a greater share of the overburden load to the sediment skeleton, resulting in irreversible compaction.
2. Subsidence caused by groundwater extraction is generally confined to the area immediately surrounding the pumping well and does not extend across wider aquifer systems.
3. Dissolution of soluble rocks beneath the surface can create underground cavities, potentially leading to sudden or progressive collapse of the overlying ground.
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Answer: (A)
Statement 1 is correct: When groundwater is extracted excessively, the fluid pressure (pore-water pressure) inside the aquifer decreases. This reduction transfers the weight of the overlying soil and rock (overburden load) directly to the solid sediment skeleton, causing grains to consolidate and compact permanently.
Statement 2 is incorrect: Land subsidence caused by groundwater pumping is not confined just to the immediate area around a pumping well. Regional aquifer systems are interconnected; large-scale or continuous groundwater depletion leads to widespread
regional subsidence extending across broad basin areas (e.g., California's Central Valley or Mexico City).
Statement 3 is correct: Dissolution of soluble rocks (such as limestone, gypsum, or salt) by groundwater creates underground voids and karst topographies. When the structural integrity of these cavities fails, it leads to progressive settling or sudden sinkhole collapses.
Statement 1 is correct: When groundwater is extracted excessively, the fluid pressure (pore-water pressure) inside the aquifer decreases. This reduction transfers the weight of the overlying soil and rock (overburden load) directly to the solid sediment skeleton, causing grains to consolidate and compact permanently.
Statement 2 is incorrect: Land subsidence caused by groundwater pumping is not confined just to the immediate area around a pumping well. Regional aquifer systems are interconnected; large-scale or continuous groundwater depletion leads to widespread
regional subsidence extending across broad basin areas (e.g., California's Central Valley or Mexico City).
Statement 3 is correct: Dissolution of soluble rocks (such as limestone, gypsum, or salt) by groundwater creates underground voids and karst topographies. When the structural integrity of these cavities fails, it leads to progressive settling or sudden sinkhole collapses.
Prime Minister Narendra Modi met Belgian PM Bart De Wever in New Delhi during his official visit to India. It was De Wever’s first visit to India and the first visit by a Belgian PM in nearly two decades.
Both sides agreed to double bilateral trade in the next five years and establish an Investment Fast-Track Mechanism to facilitate Belgian investments in India.
Important for UPSC: India–Belgium relations + India–EU FTA + Antwerp diamond trade + defence cooperation + critical minerals + semiconductors.
Both sides agreed to double bilateral trade in the next five years and establish an Investment Fast-Track Mechanism to facilitate Belgian investments in India.
Important for UPSC: India–Belgium relations + India–EU FTA + Antwerp diamond trade + defence cooperation + critical minerals + semiconductors.
ompared with ethanol, butanol-based fuels have higher energy density and properties more similar to gasoline, making them attractive for transport applications.
Important for UPSC: Isobutanol → C₄ alcohol → Biofuel → Biomass fermentation → Higher energy density than ethanol → Alternative to fossil fuels.
Important for UPSC: Isobutanol → C₄ alcohol → Biofuel → Biomass fermentation → Higher energy density than ethanol → Alternative to fossil fuels.
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We’re expanding our team and looking for talented and passionate individuals across multiple roles.
If you’re looking for an opportunity to learn, grow, collaborate and make an impact, we’d love to hear from you!
Apply Now: https://forms.gle/yt1NdGLLyL2ALPhYA
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Come be a part of our journey!
The Supreme Court has held that the Bar Council of India (BCI) and State Bar Councils have no statutory power to discipline or punish law students under the Advocates Act, 1961.
The BCI can prescribe standards of legal education and regulate the legal profession, but its disciplinary jurisdiction applies to enrolled advocates, not students.
Important for UPSC:BCI → Advocates Act, 1961 → Legal education & legal profession → Disciplinary power over enrolled advocates → No disciplinary jurisdiction over law students.
The BCI can prescribe standards of legal education and regulate the legal profession, but its disciplinary jurisdiction applies to enrolled advocates, not students.
Important for UPSC:BCI → Advocates Act, 1961 → Legal education & legal profession → Disciplinary power over enrolled advocates → No disciplinary jurisdiction over law students.
Papikonda National Park is located in the Papi Hills of Andhra Pradesh, along both banks of the Godavari River, in the Eastern Ghats.
Important for UPSC: Papikonda National Park → Andhra Pradesh → Eastern Ghats → Papi Hills → Godavari River → National Park in 2008.
Important for UPSC: Papikonda National Park → Andhra Pradesh → Eastern Ghats → Papi Hills → Godavari River → National Park in 2008.