National Quantum Mission (NQM)

Statement 1 is Correct: The National Quantum Mission (NQM) aims to develop intermediate-scale quantum computers with 50 to 1000 physical qubits within 8 years. Specifically, it targets 50–100 physical qubits in 5 years and scales up to 50–1000 physical qubits in 8 years using platforms like superconducting and photonic technology. Statement 2 is Correct: The implementation of the mission explicitly includes the establishment of four Thematic Hubs (T-Hubs) in top academic and national R&D institutes across India. These hubs focus on distinct technology verticals: Quantum Computing (led by IISc Bengaluru), Quantum Communication (led by IIT Madras), Quantum Sensing & Metrology (led by IIT Bombay), and Quantum Materials & Devices (led by IIT Delhi). Therefore, both statements are correct.

Statement 1 is Correct: Mission Sudarshan Chakra is designed as a multi-domain security umbrella. It explicitly aims to enhance India's air defence, ballistic missile defence, and aerial offensive capabilities, acting as both a defensive shield and an offensive sword. Statement 2 is Correct: The mission integrates advanced technologies like AI, space-based sensors, and directed energy weapons to ensure rapid, precise, and powerful defence responses. This indigenous development (incorporating projects like Project Kusha) is specifically aimed at reinforcing India's strategic autonomy and self-reliance in the defence sector. Statement 3 is Correct: A major distinguishing feature of this initiative is its expanded scope. Announced as a 10-year national security initiative, a stated goal of the mission is to bring all public places (including hospitals, railways, and religious/cultural sites) under an expanded nationwide security shield by 2035, moving beyond the conventional protection of just military and strategic installations. Therefore, the correct option is A.

Statement 1 is Correct: Blockchain's architecture allows data to be shared transparently with relevant stakeholders. Because the ledger is append-only and secured by network consensus, users can view records without the risk of unauthorized alteration. Statement 2 is Correct: Blockchain operates as a decentralized database (Distributed Ledger Technology). Identical copies of the entire ledger are stored across multiple computers (nodes) on a network. These nodes continuously communicate and sync rapidly (often within seconds, depending on the specific blockchain protocol) to maintain a single source of truth. Statement 3 is Correct: A consortium blockchain is a hybrid model that blends features of both public (open) and private (closed) blockchains. It is governed by a pre-approved group of organizations rather than a single entity or the open public, allowing for semi-decentralized control and selective data access. Statement 4 is Correct: Blockchain uses complex mathematical algorithms (cryptographic hashing) to link blocks. Once data is recorded and validated by the network, changing or deleting it requires altering all subsequent blocks and gaining majority network control, making tampering practically impossible. *Note: While all four statements are factually correct based on the principles of blockchain technology, there is no option provided that includes all of them (1, 2, 3, and 4). Option C is the most comprehensive and appropriate choice as it correctly identifies statements 1, 2, and 4 as a valid set.* Therefore, the correct option is C.

* AI is now being used to analyze industrial data, optimize processes, and predict energy usage patterns. This allows for targeted interventions to reduce overall consumption. * AI can now generate more creative and coherent text formats compared to 2020. While still under development, some AI-generated content can be quite engaging, blurring the lines between human and machine creation. * AI has become a powerful tool in medical diagnosis. AI algorithms can analyze vast amounts of medical data, identify complex patterns, and assist healthcare professionals in diagnosis and treatment planning. * Text-to-speech conversion using AI continues to be a well-established technology. AI can now generate natural-sounding speech with various accents and emotions, making it a valuable tool for various applications. * While significant wireless transmission of electricity over long distances remains a challenge, there has been progress in short-range wireless charging and localized energy transfer using AI-powered systems. Note: From the current status of AI development, all the listed applications of AI are feasible. However, this question was asked by the UPSC in 2020 when Generative AI was yet to become mainstream. UPSC's official answer key gave 'B' as the correct answer.

The scenario described involves various devices (smartphone, geyser, smart mirror, refrigerator, car, etc.) communicating with each other and with the user, and automatically performing tasks based on certain triggers. This is characteristic of the Internet of Things (IoT). Option B is correct: Internet of Things (IoT) is a system of interrelated computing devices, mechanical and digital machines, objects, animals or people that are provided with unique identifiers (UIDs) and the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction. Option A is incorrect: Border Gateway Protocol is a protocol used to exchange routing information across the internet and is not relevant to the scenario described. Option C is incorrect: Internet Protocol is a set of rules for sending and receiving messages at the Internet address level, but it doesn't cover the broad range of device intercommunication described in the scenario. Option D is incorrect: A Virtual Private Network is a technology for using the internet or another intermediate network to connect computers to isolated remote computer networks that would otherwise be inaccessible, which also doesn't fit the scenario.