UPSC Current Affairs Quiz : 15 June 2026

Solution: A

• Unilateral maritime blockades, such as the aggressive naval enforcement actions by US military forces carrying out a strict blockade against Iranian energy exports, frequently cause friction with third-party countries. When non-compliant commercial vessels carrying Indian seafarers are targeted and fired upon in regional waters, it directly complicates bilateral ties between strategic partners like India and the United States. This demonstrates that Statement I is correct.
• Statement II is also correct because UNCLOS explicitly guarantees neutral commercial vessels the right of innocent passage through international waters and strategic maritime channels, protecting global trade and civilian shipping from external interference.
• Statement II provides the exact legal and conceptual explanation for Statement I. The reason these unilateral blockades create intense diplomatic friction and protests (such as diplomatic demarches) is because they directly clash with the established international laws of freedom of navigation guaranteed under UNCLOS. When a state uses lethal force against commercial tankers in international straits like the Strait of Hormuz, it violates the right of innocent passage, directly leading to the diplomatic challenges stated in Statement I.

Solution: D

• The Ministry of Electronics and Information Technology (MeitY) unveiled “Varya,” which represents a significant milestone in India’s technological ecosystem. It is India’s first indigenous, distilled video story-generating AI model. Engineered by Avataar, it functions as a generative text-to-video and image-to-video platform, making Statement 1 correct.
• The operational mechanics of Varya rely heavily on machine learning distillation. This advanced process compresses a massive foundational AI model into a highly optimized, lightweight version. As a result, it can generate high-quality, moving digital stories in just 4 steps instead of the 50 steps typically required by conventional architectures, drastically enhancing processing speed and efficiency while maintaining cost-effectiveness. Thus, Statement 2 is correct.
• Furthermore, unlike many global AI architectures that lack localized data, Varya is explicitly trained on deep Indian contexts. This allows the platform to exhibit granular cultural context awareness, enabling the precise and sensitive representation of regional Indian festivals, traditional attire, regional food habits, languages, and daily life. This makes Statement 3 correct.

Solution: B

• An El Niño develops through a profound disruption of the coupled oceanic-atmospheric balance over the tropical Pacific. Under normal climate conditions, steady easterly trade winds push warm surface water westward toward Asia, allowing nutrient-rich cold deep water to well up along the South American coast. During an El Niño event, these trade winds weaken or completely reverse direction, blowing from west to east.
• Without the wind pressure pushing it westward, the massive pool of warm surface water sloshes backward across the Pacific toward South America. As this warm water accumulates over the central and eastern equatorial Pacific, it depresses and suppresses the thermocline—the underwater boundary layer separating warm surface water from cold deep water. This suppression blocks the normal upwelling of cold water along the coasts of Peru and Ecuador.
• Consequently, the atmospheric Walker Circulation is weakened or torn apart rather than accelerated. The primary zone of rising air and thunderstorm activity shifts eastward into the central ocean expanse, altering jet streams and releasing massive oceanic heat that temporarily raises global average temperatures. Thus, option (b) perfectly describes this cyclical climate phenomenon.

Solution: D

• Paraquat is an extremely potent and highly toxic chemical compound. Ingesting even a small sip causes immediate and irreversible cellular damage, spreading through the bloodstream and accumulating directly in the lungs. This results in accelerated pulmonary fibrosis (lung scarring) and multi-organ failure. There is no known medical antidote, which makes Statement I correct.
• However, Statement II is incorrect. Putting a poisoned patient on a medical ventilator or introducing supplemental oxygen actually accelerates and worsens the oxidative damage. The chemical generates reactive oxygen species (superoxides), and adding more oxygen intensifies this destructive chemical reaction, fast-tracking multi-organ failure.

Statement III is also incorrect because Paraquat is a non-selective contact herbicide, not a selective one. It destroys any green plant tissue it comes into contact with by disrupting cell structures on impact during photosynthesis, which is why it is used for rapid field clearing despite its lethal risks.

Solution: B

• Evaluating global space exploration assets reveals distinct flagship programs across different space agencies. The H3 rocket is Japan’s next-generation, liquid-propellant flagship launch vehicle designed by the Japan Aerospace Exploration Agency (JAXA) and Mitsubishi Heavy Industries to replace the legacy H-IIA system. Therefore, Pair 1 is incorrectly matched with the European Space Agency.
• Similarly, Ariane 6 is the flagship heavy-lift launch vehicle developed by the European Space Agency (ESA) to secure autonomous access to space for Europe, meaning Pair 2 is also incorrectly matched with Japan.
• Pair 3 is correctly matched, as the Launch Vehicle Mark-3 (LVM3) is the operational heavy-lift flagship launch vehicle of the Indian Space Research Organisation (ISRO), utilized for critical commercial satellite deployments and deep-space lunar and planetary missions.
• Pair 4 is also correctly matched because the Long March 5 (Changzheng 5) serves as the primary heavy-lift flagship launch vehicle for the China National Space Administration (CNSA), critical for launching its space station modules and lunar exploration probes.

Solution: A

• The geographical and geological properties of the Euphrates River are highly significant. It originates in the rugged Taurus Mountains of southern Turkey (Eastern Anatolia) through the merger of its major headwaters, the Karasu and Murat rivers. This confirms that Statement 1 is correct.
• However, Statement 2 is incorrect regarding its course and termination. The river flows southward and eastward across Turkey, Syria, and Iraq. It does not enter Jordan. Furthermore, near the city of Basra in Iraq, the Euphrates joins the Tigris River to form the Shatt al-Arab delta, which finally empties into the Persian Gulf, not the Red Sea.

Solution: A

• Statement I is correct because distilled generative artificial intelligence frameworks, such as India’s indigenous Varya video model, drastically reduce operational barriers. They lower computation costs significantly (for example, reducing content creation expenses to roughly ₹0.48 per second of video) and speed up execution, making advanced technology accessible to MSMEs, students, and rural entrepreneurs.
• Statement II is also correct because it defines the underlying technical mechanism of distillation. This machine learning methodology compresses the dense algorithmic layers of a large foundational model into a lightweight, highly optimized version. This allows the system to generate complex assets, like high-quality video stories, in just 4 steps rather than the traditional 50 steps.

Statement II directly explains Statement I. The reason these distilled models can operate with lower computational power and at much faster speeds (Statement I) is precisely because the distillation process compresses the model into a lightweight architecture that processes variables in fewer steps (Statement II).

Solution: B

• To evaluate changes during climate anomalies, one must understand baseline conditions. Under normal, non-El Niño climate conditions, strong trade winds blow from east to west (easterly trade winds) across the equator, not westerly. This wind pressure pushes warm surface water toward Asia and the western Pacific, meaning Statement 1 is incorrect.
• Because warm surface water is pushed away from the South American coast, a vacuum is created that allows cold, nutrient-rich deep water to well up from the deep ocean along the coasts of Peru and Ecuador. This process is upwelling, not downwelling, which renders Statement 2 incorrect.
• Furthermore, the normal atmospheric Walker Circulation operates as a tropical loop tied to these ocean temperatures. Air rises over the warm waters of the western Pacific (near Indonesia), creating low pressure and thunderstorm activity, and then travels eastward in the upper atmosphere before sinking over the cooler waters of the eastern Pacific (near South America). Therefore, Statement 3 is incorrect because it reverses the actual direction of air movement.

Solution: C

• Modern airborne surveillance platforms use sensor fusion to manage battlespaces effectively. Statement 1 is correct because the Netra platform goes beyond basic radar tracking. It integrates Electronic Support Measures (ESM) and Communication Support Measures (CSM), allowing it to intercept, map, and pinpoint enemy radar positions and radio networks, creating a comprehensive electronic order of battle.
• However, Statement 2 is completely incorrect. The platform does not rely on slow, manual voice communications to relay critical target coordinates. Instead, it features full network-centric warfare integration, utilizing highly secure, automated, and jam-resistant data links to stream real-time target data simultaneously to fighter jet cockpits and ground command units.
• Statement 3 is correct. Netra is equipped with an integrated self-protection electronic warfare suite. This suite is specifically engineered to detect, prioritize, and automatically spoof incoming hostile missile threats, ensuring the survivability of the aircraft while it operates as a tactical force multiplier near sensitive borders.

Solution: C

• In international relations, a demarche protocol is a primary, official tool used by a sovereign government to communicate its official stance, deep concern, or strong objection directly to a foreign power, often by summoning their resident diplomat. This makes Statement 1 correct.
• However, Statement 2 is incorrect because a demarche is a mechanism of formal diplomatic engagement, not a severance of ties. Its primary purpose is to signal serious concern or protest while actively preserving communication channels, allowing both nations to pursue peaceful dialogue and dispute resolution rather than escalating immediately to open warfare or a complete breakdown of relations.