UPSC Current Affairs Quiz : 4 May 2026

Answer: B

Explanation:

• Tanzania’s geography is defined by its dramatic physical features.
• Statement 1 is correct; the country is uniquely situated between Lake Victoria (north), Lake Tanganyika (west), and Lake Nyasa (south). These lakes are central to the region’s ecology and economy.
• Statement 3 is also correct; Mount Kilimanjaro is an extinct volcano that rises to 5,895 meters, making it the highest point in Africa.
• Statement 2 is incorrect. The East African Rift System does not create a single continuous valley but rather divides into two distinct branches within Tanzania: the Western Rift Valley and the Eastern Rift Valley. This geological activity has created scenic depressions, fertile volcanic soils, and unique ecosystems like the Ngorongoro Crater.
• The country’s topography is dominated by plateaus, with most of the land situated above 200 meters. The presence of the rift system also contributes to the country’s hydroelectric potential.

Answer: B

Explanation:

• Statement 1 is incorrect because India has a long history of hosting this premier event, having previously hosted the tournament in 1978, 1997, and 2013. The 2025 edition was co-hosted by India and Sri Lanka.
• Statement 2 is correct; the tournament utilizes a Round-robin format where teams play against each other to qualify for the knockout semi-finals and final.
• Statement 3 is correct; the final held at DY Patil Stadium saw India emerging victorious against South Africa by 52 runs, marking India’s first-ever Women’s World Cup title.
• This victory is considered a watershed moment for women’s empowerment in sports within India. Historically, the Women’s World Cup actually predates the Men’s version, having first been held in 1973. Australia remains the most dominant force in the competition’s history with seven titles, but India’s 2025 triumph signals a shift in the global cricketing landscape.

Answer: D

Explanation:

• Sudan, located in Northeast Africa, is the third-largest country on the continent. Its geography is central to the regional dynamics of the ongoing conflict. Sudan shares borders with seven nations: Egypt to the north, Libya to the northwest, Chad to the west, Central African Republic to the southwest, South Sudan to the south, and Ethiopia and Eritrea to the southeast. It also has an extensive coastline along the Red Sea.
• Kenya and Uganda do not share a border with Sudan; they are located further south, bordering South Sudan.

Answer: B

Explanation:

• The inclusion of the Ka-band (26.5–40 GHz) in the CMS-03 (GSAT-7R) satellite is a strategic upgrade. The primary advantage of the Ka-band is its ability to provide much higher bandwidth compared to the lower-frequency C and Ku bands. This makes it ideal for high-throughput satellite (HTS) services, such as broadband internet, video conferencing, and supporting 5G backhaul in remote or maritime areas.
• However, one disadvantage of the Ka-band (contradicting option c) is that it is highly susceptible to “rain fade,” where atmospheric moisture can attenuate the signal. Therefore, satellites often use a multi-band approach (like CMS-03), using C-band for high reliability during bad weather and Ka-band for high-speed data under clear conditions. This combination ensures that the satellite can support diverse applications, from secure defense communication to expanding India’s digital footprint in the Indian Ocean Region. This technology is crucial for maritime domain awareness and disaster management.

Answer: A

Explanation:

• Statement I is correct; the wetland complex is a cornerstone of the Assam floodplain ecosystem. Statement II is also correct and provides the precise ecological reasoning for Statement I. During the monsoon, the Brahmaputra River frequently floods the Kaziranga National Park. For the survival of large mammals like rhinos, elephants, and tigers, as well as numerous avian species, they must migrate to higher grounds or move to other sanctuaries like Orang.
• The Rowmari–Donduwa complex, located within the Laokhowa Wildlife Sanctuary, serves as this migratory corridor. Without this “natural bridge,” wildlife would be stranded in flooded areas or forced into human-dominated landscapes, increasing human-wildlife conflict. The wetland also serves as a carbon sink and a flood buffer, protecting the surrounding villages from the worst impacts of the river’s overflow.
• Its role in maintaining ecological connectivity is why experts are pushing for its designation as a Ramsar site, which would mandate higher levels of legal and environmental protection for the corridor.

Answer: C

Explanation:

• The New Sevilla Forum on Debt is an institutional response to the growing debt distress in the Global South.
• Statement 1 is correct because one of its core features is strengthening North–South cooperation. Historically, debt negotiations occurred in the “Paris Club” (mostly wealthy creditors) or “London Club” (private creditors), often leaving the debtor nation at a disadvantage. The Sevilla Forum seeks to create a more balanced dialogue where sovereign sustainability is prioritized alongside creditor rights. This is essential for maintaining global financial stability.
• Statement 3 is also correct as the forum serves a monitoring and implementation role. It doesn’t just discuss ideas; it tracks progress on the Sevilla Platform for Action, ensuring that commitments made at Fourth International Financing for Development Conference(FfD4) are translated into technical support and policy changes.
• However, Statement 2 is incorrect. The forum is not a financial institution or a debt-clearing house. It does not have the capital to buy bonds or provide bailouts. Instead, it acts as a soft-power platform for reform, providing the “technical support” and “global consensus” needed for existing financial institutions (like the IMF) to change their debt-treatment frameworks. It acts as a bridge, not a bank.

Answer: A

Explanation:

• The UDAN scheme is a flagship Regional Connectivity Scheme (RCS) launched in 2016 under the National Civil Aviation Policy. Its primary objective is to democratize aviation, making it accessible to the common citizen.
• Statement-I correctly identifies that the scheme promotes balanced economic development. By connecting remote and regional areas to major urban hubs, it stimulates local trade, tourism, and investment in previously underserved regions. This “bottom-up” approach to connectivity ensures that the benefits of the aviation sector are not confined to metros but extend to Tier-2 and Tier-3 cities.
• Statement-II explains the “how” behind this democratization. High operational costs often make regional routes unviable for private airlines. To bridge this gap, the government provides Viability Gap Funding (VGF), which is a financial subsidy provided to flight operators to cover the difference between the cost of operations and the expected revenue from capped fares. This Airfare Cap is the critical mechanism that ensures affordability.
• Since the affordability ensured by VGF (Statement-II) is precisely what enables the democratization and economic link described in Statement-I, Statement-II serves as the logical explanation for Statement-I. This dual-pillar approach of connectivity and affordability has led to the doubling of India’s operational airports over the last decade.

Answer: D

Explanation:

• Amoebic meningoencephalitis, or PAM, is caused by the free-living amoeba Naegleria fowleri, popularly known as the “brain-eating amoeba.” The transmission mechanism is highly specific. Unlike many waterborne diseases, it is not caused by drinking or ingesting contaminated water (refuting option a). Instead, the infection occurs when water containing the amoeba is forcefully pushed or enters the nasal cavity, typically during swimming, diving, or jumping into warm freshwater bodies like lakes, rivers, or unchlorinated pools.
• Once inside the nose, the amoeba attaches to the olfactory nerve and migrates to the brain. There, it destroys brain tissue, leading to severe inflammation and swelling. This explains why the disease is restricted to the central nervous system. It is also important to note that the disease is not contagious; it cannot spread from person to person (refuting option b).
• The amoeba thrives in warm freshwater and soil, especially during the summer months in tropical and subtropical regions. In India, states like Kerala have reported cases, emphasizing the need for prevention, such as using nose clips or avoiding submerging the head in untreated freshwater. While rare, the mortality rate exceeds 95%, making early detection and supportive care with drugs like amphotericin B critical.

Answer: B

Statement 1 is a correct conceptual description of comets. They are remnants from the formation of the solar system (4.6 billion years ago) and consist of a solid core (nucleus) of ice and dust.

Statement 2 is also correct. As a comet approaches the Sun, solar radiation and the solar wind vaporize the ice, creating a coma and two tails. The dust tail is pushed away by radiation pressure, and the ion tail is pushed by the solar wind, ensuring both always point away from the Sun, regardless of the comet’s direction of travel.

However, Statement 3 is incorrect. In the classification of comets, short-period comets (those with orbits less than 200 years) generally originate from the Kuiper Belt, which is located just beyond the orbit of Neptune. In contrast, the Oort Cloud is the source of long-period comets, which can take millions of years to orbit the Sun.

Answer: B

Explanation:

• Statement 1 is incorrect: Green crackers do not eliminate light and sound; they are designed to produce the same festive effect but with 30-40% less pollution. They do not remove all metallic salts (which are needed for colors), but they specifically replace Barium Nitrate (a toxic oxidizer) with safer alternatives.
• Statement 2 is correct: These crackers use alternative chemicals like potassium nitrate and strontium salts. Some variants use zeolite, which acts as a molecular sieve to absorb dust and gases, significantly lowering the emission of Particulate Matter (PM 2.5) and harmful gases like Sulfur Dioxide.
• Statement 3 is correct: To combat the sale of fake crackers, the CSIR-NEERI (National Environmental Engineering Research Institute) mandate includes a QR code on the packaging. Scanning this code allows consumers and authorities to verify the manufacturer and ensure the crackers meet the prescribed emission standards.
• The three main categories are SWAS (Safe Water Releaser), STAR (Safe Thermite Cracker), and SAFAL (Safe Minimal Aluminium).