UPSC Current Affairs Quiz : 29 April 2026

Solution: C

• Somalia is strategically located on the Horn of Africa, occupying a pivotal position along the Gulf of Aden to the north and the Indian Ocean to the east. Its land boundaries are shared with Djibouti to the northwest, Ethiopia to the west, and Kenya to the southwest. This geography makes it a central player in the maritime security of the region.

Solution: D

• The Holocene is the epoch during which human agricultural practices and permanent settlements began to flourish, rather than preceding them.
• The Holocene is characterized by post-glacial warming and the melting of ice sheets, leading to a sea-level rise, whereas the expansion of ice sheets was a feature of the preceding Pleistocene Epoch (the Ice Age).

The Holocene represents a period of climatic stabilization, which allowed for the development of complex human societies. The discovery at Panaiyur by the Zoological Survey of India is significant because it provides a snapshot of the biological diversity during this relatively stable but transformative era. Reconstructing the ancient environment of the Indian subcontinent during the Quaternary period relies heavily on such fossil beds to understand how local ecosystems responded to global warming trends.

Solution: D

• A Printed Circuit Board (PCB) serves as the backbone of modern electronics, providing both mechanical support and electrical connectivity. It consists of layers of copper foil etched into specific conductive pathways (traces) on a non-conductive substrate. In terms of cost structure, copper foil is a primary component, typically accounting for approximately 60% of the total raw material costs. This makes the industry highly sensitive to fluctuations in copper prices.
• The substrate itself is made of resins (like epoxy or PPE) and glass fiber, which provides reinforcing strength. Polyphenylene ether (PPE) resin is particularly vital for high-end applications, such as AI servers, because it helps maintain signal integrity and offers high thermal resistance. Recent disruptions in the Middle East have caused a surge in PCB prices, sometimes by as much as 40%, due to the scarcity of these critical raw materials. PCBs range from simple single-layer designs to highly complex multi-layer structures that are essential for the hardware produced by giants like Nvidia, AMD, and Samsung. Their reliability and scalability make them indispensable in everything from consumer smartphones to industrial automation.

Solution: B

• The Petersberg Climate Dialogue is an informal meeting of ministers from over 30 countries, initiated by the German government in 2010. Its primary goal (Statement-I) is to build consensus and resolve deadlocks in climate negotiations outside the rigid formal structures of the UN, serving as a precursor to the annual COP. The 17th edition in 2026 (Berlin) focused on the Paris Agreement and energy transition.
• Statement-II is also correct, as a major theme of the dialogue is geopolitical resilience. The global energy crisis, often triggered by tensions in the Middle East, highlights the vulnerability of fossil-fuel-dependent economies. Promoting renewables and electrification is seen as a way to secure energy independence. However, Statement-II does not explain why the dialogue is an informal forum for COP (which is about diplomatic momentum and negotiation groundwork); rather, it describes a thematic focus of the 2026 meeting.
• Therefore, both are correct, but Statement-II is not the causal explanation for Statement-I. The dialogue acts as a bridge between the Global North and Global South, involving bodies like the International Energy Agency (IEA).

Solution: C

• The Guban is a distinct geographic feature of Somalia, specifically a narrow coastal plain located in the extreme north along the Gulf of Aden. It is characterized by its arid conditions and high temperatures. Somalia’s topography is varied; while much of it consists of flat plateaus, the northern region is more mountainous, containing ranges like the Surud Cad, which is the country’s highest peak (approx. 7,900 feet).
• In contrast, the southern coast of Somalia along the Indian Ocean is known for a vast belt of ancient dunes that stretches for over 1,000 km. The permanent rivers mentioned in option (a), the Jubba and Shabeelle, are critical water sources originating in the Ethiopian highlands, but they flow through the southern alluvial plains rather than the Guban. The Guban’s harsh environment is a testament to the diverse ecological zones found within the Horn of Africa.

Solution: B

• The Humpback Whale (Megaptera novaeangliae) is renowned for its complex and highly coordinated bubble-net feeding This is a social foraging behavior where a group of whales swims in a shrinking circle below a school of fish or krill while blowing bubbles from their blowholes.
• The rising curtain of bubbles acts as a physical and visual barrier that corrals the prey into a tight “net.” Once the prey is concentrated, the whales simultaneously swim upward through the center of the bubble net with their mouths wide open, engulfing thousands of fish in a single gulp. This method demonstrates high levels of social intelligence and communication among whales. This behavior is particularly vital in high-latitude feeding grounds where prey density is high.

Humpback whales are filter feeders using baleen plates rather than teeth. Their role in the ocean is multifaceted; by feeding in deep waters and excreting nutrients at the surface (the “whale pump”), they stimulate phytoplankton growth, which forms the base of the marine food chain and absorbs atmospheric carbon dioxide. Thus, the health of humpback populations is a critical indicator of the overall productivity and carbon sequestration capacity of the global oceans.

Solution: B

• The Bab el-Mandab Strait is a crucial geographical link in the global maritime trade network. It connects the Red Sea (to the north) with the Gulf of Aden (to the south), which then opens into the Arabian Sea and the wider Indian Ocean.
• Its strategic importance stems from its role as the southern entrance to the Suez Canal route; without access to this strait, the canal would be unreachable from the south. The strait is bordered by Yemen on the Arabian Peninsula and Djibouti and Eritrea in the Horn of Africa. It is divided into two channels by Perim Island, with the western channel being the primary route for large commercial tankers and container ships. Because it facilitates the movement of over 30 million tonnes of LNG and millions of barrels of oil annually, it is often a target for geopolitical leverage.

The recent escalation of ballistic missile attacks from Yemen-based rebels has highlighted its status as a “Gate of Tears,” as a closure here disrupts the energy security of Europe and North America and forces a massive, costly diversion around the Cape of Good Hope.

Solution: C

• The Global Action Plan (GAP) for the Steppe Eagle is a landmark international agreement. It was adopted in 2026 at the 15th Conference of the Parties (COP15) to the Convention on the Conservation of Migratory Species of Wild Animals (CMS) in Brazil.
• Statement 1 is correct. One of the six strategic goals is to significantly reduce the illegal killing, trapping, and trade of the species. This includes a modern focus on online markets, where rare raptors are often sold.
• Statement 2 is correct. The Steppe Eagle is a quintessential migratory bird of prey that uses the Central Asian Flyway (CAF). India is a critical destination on this flyway, with the eagles arriving from breeding grounds in Russia and Kazakhstan to winter in states like Rajasthan, Gujarat, and Haryana. The plan recognizes the Thar Desert as a lifeline for the species. By coordinating 49 specific actions across all range states, the GAP aims to halt the decline of this Endangered This involves multi-stakeholder engagement to prevent poisoning from pesticides and NSAIDs and to protect the open grasslands and steppes that these majestic birds call home.

Solution: A

• Statement-I is correct. One of the core functional mandates of BRIC is to promote frugal innovation and design intelligence. Frugal innovation refers to the process of reducing the complexity and cost of a good and its production, which is essential for a developing economy like India to ensure that biotechnological advancements are accessible and scalable.
• Statement-II is also correct. The council specifically targets the development of sovereign technologies. This involves a strategic shift toward utilizing locally sourced materials and indigenous data sets. In the context of global biotechnology, dependency on foreign intellectual property, raw materials, and data can create vulnerabilities. By focusing on indigenous resources, BRIC ensures that India’s bioeconomy is self-reliant and resilient.

Statement-II provides the correct explanation for Statement-I. The reason BRIC emphasizes frugal innovation and design intelligence is precisely to facilitate the creation of these sovereign technologies. By using local materials (which are often more cost-effective) and indigenous data (which is more relevant to the local population), the council achieves the “frugal” aspect of its mission while simultaneously building national technological sovereignty. This alignment helps in competing with global biotech giants by leveraging India’s niche expertise and local advantages.

Solution: D

• Statement 1 is correct. Superior Kerosene Oil (SKO) is a highly refined middle distillate. The refining process is more intensive than that for regular kerosene, specifically aimed at removing impurities such as sulphur and aromatics. Lower aromatic content is a defining feature of “Superior” grade oil, as it contributes to cleaner burning and less odor.
• Statement 2 is correct. The smoke point is a critical quality parameter for kerosene. SKO is refined to maintain a high smoke point (typically between 18-22 mm). A higher smoke point indicates that the fuel can burn at a higher temperature or longer before it starts producing smoke. This is vital for indoor safety, as it reduces the emission of soot and harmful particles in poorly ventilated rural households.

Statement 3 is correct. The illegal diversion of subsidized kerosene for adulterating diesel is a significant challenge in India. To counter this, PDS-destined SKO is chemically dyed blue. This serves as a visual marker for law enforcement and consumers, distinguishing it from non-subsidized industrial kerosene or automotive fuels. Additionally, SKO has a strictly controlled flash point (above 35°C–40°C) to ensure safety during transport and storage in domestic environments.