UPSC Quiz – 2026 : IASbaba’s Daily Current Affairs Quiz 11th September 2026

Solution (b)
Explanation: Perylene Diimide (PDI) is indeed a class of organic semiconductor molecules derived from perylene, making statement 1 correct. It functions as an electron acceptor, facilitating the transfer of photo-generated electrons during photocatalytic reactions, so statement 2 is correct. Statement 3 is incorrect because PDI possesses strong light absorption, particularly in the visible region, not the ultraviolet region. This visible-light absorption is what makes it useful for solar-driven applications.
Why this question? Tests the basic properties of a newly developed material.
Why important for UPSC? UPSC often asks about the fundamental nature of materials in the news.
PYQ Pattern Link: Similar questions on materials like graphene and its properties have appeared in prelims.

Solution (c)
Explanation: The Resplendent Shrub Frog is endemic to the high-altitude shola-grassland ecosystems of the Western Ghats, particularly in the Anamudi region of Kerala (statement 2 correct). It exhibits direct development, meaning young froglets emerge from eggs without a free-swimming tadpole stage (statement 3 correct). Statement 1 is incorrect because, unlike many other shrub frogs, this species is primarily ground-dwelling, not arboreal.
Why this question? Tests the specific habitat and biological characteristics of an endangered species.
Why important for UPSC? Species-habitat-location combinations are a recurring theme in Environment & Ecology.
PYQ Pattern Link: Questions on endemic species of the Western Ghats have been asked previously.

Solution (d)
Explanation: All three statements are correct. The ORV Sagar Manthan is being built indigenously by GRSE, Kolkata (statement 1). It is a key component of the Deep Ocean Mission, which is under the Ministry of Earth Sciences (statement 2). The vessel is designed for deep-sea surveys and sampling, including operations up to approximately 6,000 meters depth (statement 3).
Why this question? Tests the factual details of a major indigenous scientific vessel.
Why important for UPSC? Science & Technology questions often focus on India’s indigenous capabilities.
PYQ Pattern Link: Similar questions on India’s research vessels and missions have appeared.

Solution (c)
Explanation: The IAEA is responsible for promoting the peaceful use of nuclear energy and preventing its diversion towards nuclear weapons (statement 2 correct). While it reports to the UN Security Council and General Assembly, it is an autonomous international organisation within the UN family, not a specialized agency in the conventional sense (statement 1 incorrect). The IAEA itself does not have enforcement powers; it can refer cases of non-compliance to the UN Security Council, which then decides on enforcement action (statement 3 correct).
Why this question? Tests the institutional nature and functions of the IAEA.
Why important for UPSC? International organizations and their mandates are frequently tested in IR.
PYQ Pattern Link: Questions on the IAEA and its role in nuclear safeguards have appeared in prelims.

Solution (d)
Explanation: All three statements are correct. Exercise Samudra Laksamana is a bilateral maritime exercise between the Indian Navy and the Royal Malaysian Navy (statement 1). The 2026 edition was the fourth edition of the exercise (statement 2). INS Mysore, a Delhi-class guided missile destroyer, was part of the Indian Navy’s participation in the 2026 edition (statement 3).
Why this question? Tests the factual details of a bilateral military exercise.
Why important for UPSC? Defence exercises and India’s bilateral engagements are important for IR and Security.
PYQ Pattern Link: Questions on India’s bilateral exercises with other countries are common in prelims.