Daily Current Affairs Quiz: January 31, 2026

Statement 1 is correct: PSLV follows a four-stage configuration where the first stage uses solid propellant, while the second stage uses earth-storable liquid propellants, providing reliability, restart capability, and mission flexibility.

Statement 2 is correct: GSLV Mk III (LVM3) is designed to carry heavier payloads to Geosynchronous Transfer Orbit due to its high-thrust cryogenic upper stage and powerful solid strap-on boosters.

Statement 3 is correct: SSLV is engineered for rapid launch-on-demand with minimal launch infrastructure, reduced integration time, and simplified operations to cater specifically to small satellite and commercial launch requirements.

Statement 1 is incorrect: Nanorobots for targeted drug delivery are still largely at experimental or research stages, with limited clinical trials; they are not yet deployed at a commercial scale in routine human medical practice.

Statement 2 is correct: Nanotechnology exploits nanoscale phenomena to enhance strength, conductivity, reactivity, or surface properties of materials without necessarily changing their bulk chemical composition.

Statement 3 is correct: Modern robotics increasingly integrates artificial intelligence, sensors, and machine learning to enable perception-driven, adaptive decision-making instead of relying solely on fixed, pre-programmed instructions.

Statement 1 is correct: Gene editing enables highly precise, targeted changes in DNA sequences through programmable nucleases such as CRISPR-Cas systems, allowing deletion, insertion, or correction of genes at specific genomic locations.

Statement 2 is incorrect: Gene modification does not necessarily require the introduction of foreign genetic material; it may also involve alteration, silencing, or deletion of existing genes within the organism’s genome.

Statement 3 is correct: Gene editing raises ethical concerns mainly due to its potential use in germline modifications, as such changes are heritable and may affect future generations without their consent.

Statement 1 is correct: IoT systems function through sensor-generated data combined with network connectivity and analytics, enabling real-time monitoring, automation, and remote control across applications such as smart cities and industrial systems.

Statement 2 is correct: Edge computing processes data closer to the source in IoT systems, significantly reducing latency, bandwidth usage, and dependence on centralized cloud infrastructure.

Statement 3 is incorrect: IoT architecture does not eliminate cybersecurity risks; instead, increased device connectivity and distributed endpoints expand the attack surface, making security a critical challenge in IoT deployments.

Statement 1 is correct: Nuclear fission involves the splitting of heavy nuclei such as uranium-235 or plutonium-239, releasing large amounts of energy and free neutrons that can sustain a self-propagating chain reaction.

Statement 2 is correct: Nuclear fusion releases energy by fusing light nuclei like deuterium and tritium at extremely high temperatures, producing helium and energy with comparatively minimal long-lived radioactive waste.

Statement 3 is correct: Tokamak-based fusion programmes aim to achieve controlled nuclear fusion by using strong magnetic fields to confine and stabilize high-temperature plasma, preventing contact with reactor walls.