UPSC Daily PIB Quiz for 25ᵗʰ September 2026

1) With reference to dilution refrigeration, consider the following statements:

1. The cooling mechanism involves the behaviour of a helium-3 and helium-4 mixture at very low temperatures.
2. A dilution refrigerator can maintain temperatures in the millikelvin range without requiring the system to be completely isolated from all forms of heat exchange.
3. Such ultra-low temperatures are relevant to superconducting quantum computing because thermal disturbances can affect quantum states.

Which of the statements given above is/are correct?

2) With reference to Nidhi Companies, consider the following statements:

1. Their financial activities are principally organised around mutual benefit among their members.
2. A person can treat deposits with a Nidhi Company as equivalent to insured bank deposits for the purpose of DICGC protection.

Which of the statements given above is/are correct?

3) With reference to the proposed Kalpasar project and India's cooperation with the Netherlands in water management, consider the following statements:

1. The Kalpasar concept involves creation of a freshwater reservoir in Gujarat using riverine runoff along with associated hydraulic infrastructure.
2. Dutch expertise relevant to the cooperation includes hydraulic and hydrological modelling, coastal engineering and climate-resilient water infrastructure.
3. The Afsluitdijk is an example of Dutch water infrastructure associated with the management of the country's coastal and freshwater systems.

Which of the statements given above is/are correct?

4) With reference to Exercise VARUNA, consider the following statements:

1. It provides a framework for maritime cooperation and interoperability between the Indian and French navies.
2. Cross-deck activities during naval exercises primarily involve transfer of naval vessels from one country's fleet to the permanent command of the other country.
3. The exercise can include both harbour-phase professional interactions and sea-phase operational activities.

Which of the statements given above is/are correct?

5) With reference to bio-based biodegradable plastics, consider the following statements:

1. Polylactic acid (PLA) can be produced from carbohydrate-rich renewable feedstocks through a pathway involving fermentation and subsequent polymerisation.
2. Development of specialised PLA grades and co-polymers can help address application-specific requirements in commercial products.
3. The BioE3 initiative is concerned only with laboratory research and does not envisage movement towards biomanufacturing or commercial-scale applications.

Which of the statements given above is/are correct?