UPSC Daily PIB Quiz for 13ᵗʰ October 2026

1) A researcher modifies a peptide-based fluorescent material by inserting a single methylene spacer without altering its fundamental peptide framework. The material subsequently exhibits a change in fluorescence lifetime and supramolecular chirality.

Which of the following best explains this observation?

2) With reference to the Sun's corona, consider the following statements:

1. Coronal holes are characterised by predominantly open magnetic field lines, which facilitate the escape of solar wind.
2. Microwave polar brightening and coronal holes are related phenomena, but the observed brightening cannot be interpreted simply as evidence that the polar regions contain denser plasma than the surrounding Sun.
3. Coronal holes appear dark in extreme-ultraviolet observations primarily because their plasma is relatively less dense and cooler than that of surrounding regions.

Which of the statements given above are correct?

3) A person ascends rapidly to a high-altitude location and develops headache, nausea and dizziness. Which of the following physiological explanations is most appropriate?

4) Consider the following pairs relating to the institutional and digital architecture of PM GatiShakti:

1. Network Planning Group (NPG) — Examines infrastructure proposals for integration and optimisation.
2. Empowered Group of Secretaries (EGoS) — Provides technical expertise through a dedicated Technical Support Unit.
3. Unified Logistics Interface Platform (ULIP) — Integrates government logistics systems through APIs.

How many of the pairs given above are correctly matched?

5) Consider the following statements regarding IBSAMAR IX 2026:

1. It is a trilateral maritime exercise involving the navies of India, Brazil and South Africa.
2. INS Tarkash represents the Indian Navy and is deployed with an integral Chetak helicopter.
3. The exercise is conducted under the India–Brazil–South Africa (IBSA) framework and has been held biennially since 2008.

Which of the statements given above are correct?