Daily Current Affairs Quiz for UPSC Prelims 2027 — 4 July 2026

The joint military exercise 'Surya Kiran' is a significant component of India's bilateral defence cooperation. It is conducted annually between the Indian Army and the army of which neighbouring country?

Why this answer

The correct answer is Nepal. Exercise 'Surya Kiran' is an annual joint military exercise conducted between the Indian Army and the Nepal Army. The exercise aims to enhance interoperability in jungle warfare, counter-terrorism operations in mountainous terrain, and humanitarian assistance and disaster relief. The corresponding exercises with other neighbours listed as options are 'Sampriti' with Bangladesh and 'Mitra Shakti' with Sri Lanka. India does not conduct a formal, named joint military exercise with Bhutan, though military cooperation is very strong.

The static concept

India's Defence Cooperation with Neighbouring Countries under the 'Neighbourhood First' Policy.

In the context of recent advancements in Artificial Intelligence, which of the following statements best distinguishes 'Generative AI' from traditional machine learning models?

Why this answer

The correct statement is the one describing Generative AI's ability to create new and original content. This is its defining characteristic. Generative AI models, like Large Language Models (LLMs), learn the underlying patterns and structures of a training dataset and use this knowledge to produce novel outputs that did not exist before. The option describing pattern recognition and prediction based on labeled data refers to traditional supervised machine learning, which is primarily classificatory or predictive, not creative. The option about controlling robots points to robotics and reinforcement learning, which is a different sub-field of AI. The option about operating without large datasets using rule-based systems describes older 'expert systems', which is contrary to modern Generative AI that relies on massive datasets.

The static concept

Artificial Intelligence (AI) and its sub-fields, specifically the distinction between traditional Machine Learning (ML) models (e.g., for classification/prediction) and Generative AI models (for content creation).

Following the enactment of the Chief Election Commissioner and other Election Commissioners (Appointment, Conditions of Service and Term of Office) Act, 2023, which of the following now constitutes the selection committee that recommends appointments of the CEC and other ECs to the President?

Which of the following now constitutes the selection committee that recommends appointments of the CEC and other ECs to the President?

Why this answer

The correct answer describes the committee established by the Chief Election Commissioner and other Election Commissioners Act, 2023. This committee is chaired by the Prime Minister and includes the Leader of Opposition in the Lok Sabha and a Union Cabinet Minister nominated by the Prime Minister. The option mentioning the Chief Justice of India refers to the interim arrangement mandated by the Supreme Court in the Anoop Baranwal case (2023), which has been superseded by the new Act. The option regarding a parliamentary resolution with a special majority is incorrect; that procedure is related to the removal of certain constitutional functionaries, not their appointment. The concept of a collegium headed by the CJI is associated with judicial appointments, not the Election Commission.

The static concept

Article 324 of the Constitution: Superintendence, direction and control of elections to be vested in an Election Commission, including its composition and appointment.

What is the primary objective of the SPADEX (Space Docking Experiment) mission, a key technology demonstrator by the Indian Space Research Organisation (ISRO)?

Why this answer

The correct option describes the primary objective of SPADEX. This mission is designed to develop and demonstrate the technologies for autonomous rendezvous and docking. These capabilities are fundamental for future missions like establishing the Bharatiya Antariksh Station, satellite servicing, and in-orbit refueling. The mission involves two small satellites, a chaser and a target, launched together to perform these operations. The option concerning space debris removal describes a different field of space technology, which is not the focus of SPADEX. The option on the Inflatable Aerodynamic Decelerator (IAD) refers to another distinct ISRO technology demonstrator mission aimed at cost-effective payload and stage recovery. The option about microgravity experiments is an application of a space station, but SPADEX is about developing the technology to build the station itself, not conducting the experiments within it.

The static concept

Key space technologies and ISRO's capability demonstration missions, including rendezvous, docking, re-entry, and their strategic applications (e.g., space stations, satellite servicing).

With reference to Carbon Capture, Utilization, and Storage (CCUS) technologies, consider the following statements:

1. 1.The process involves three primary stages: capturing CO2 from emission sources, transporting it, and then either utilizing it or storing it permanently in geological formations.
2. 2.Depleted oil and gas reservoirs and deep saline aquifers are considered viable sites for the geological sequestration of captured carbon dioxide.
3. 3.A major 'utilization' pathway for captured CO2 is in Enhanced Oil Recovery (EOR), where it is injected into oil fields to increase crude oil extraction.
4. 4.CCUS technology is exclusively applicable to newly constructed industrial plants and power stations and cannot be retrofitted onto existing facilities.

How many of the above statements are correct?

Why this answer

Statement 1 is correct, as it accurately describes the three-stage process of CCUS: capture, transport, and storage/utilization. Statement 2 is correct; depleted hydrocarbon reservoirs and deep saline aquifers are two of the most promising types of geological formations for long-term CO2 storage. Statement 3 is also correct, as Enhanced Oil Recovery (EOR) is currently one of the most common and economically viable uses for captured CO2. Statement 4 is incorrect; while integrating CCUS into new plants is often more efficient, the technology can be and is designed to be retrofitted onto existing industrial facilities and power plants, which is a critical strategy for reducing emissions from current infrastructure.

The static concept

Carbon Capture, Utilization, and Storage (CCUS) as a key technological strategy for climate change mitigation.

With reference to the Polar Vortex, a phenomenon increasingly linked to extreme weather events, consider the following statements:

1. 1.The Polar Vortex is a persistent, large-scale cyclone located near the Earth's geographical poles, existing in both the troposphere and the stratosphere.
2. 2.A strong and stable Polar Vortex is associated with the containment of cold, polar air, leading to milder winters in the mid-latitudes.
3. 3.The weakening of the Polar Vortex directly causes the subtropical jet stream to meander significantly, bringing cold Arctic air to lower latitudes.
4. 4.Sudden Stratospheric Warming (SSW) events are a primary cause for the strengthening and stabilization of the Polar Vortex.

How many of the above statements are correct?

Why this answer

Statements 1 and 2 are correct, making 'Only two' the right answer. Statement 1 is correct: The Polar Vortex is indeed a large-scale area of low pressure and cold air surrounding the Earth's poles, and it has distinct components in both the troposphere and the stratosphere. Statement 2 is correct: When the vortex is strong and stable, the polar jet stream flows in a tight, circular path, effectively locking the cold air over the Arctic. This prevents the cold air from plunging south, leading to milder conditions in mid-latitude regions like North America and Europe. Statement 3 is incorrect: The weakening of the Polar Vortex primarily affects the *polar front jet stream*, causing it to meander. The subtropical jet stream is a separate system located at lower latitudes and is not the primary one influenced in this manner. Statement 4 is incorrect: Sudden Stratospheric Warming (SSW) is a rapid warming event in the polar stratosphere which disrupts and *weakens* the Polar Vortex, often causing it to split or be displaced, rather than strengthening it.

The static concept

Upper-Atmospheric Circulation, specifically the role of the Polar Vortex and its interaction with the Polar Front Jet Stream.

With reference to the Forest (Conservation) Act, 1980, and its recent amendment in 2023, consider the following statements:

1. 1.The Forest (Conservation) Act, 1980, in its original interpretation post the Godavarman judgment, applied only to lands officially notified as 'forests' under the Indian Forest Act, 1927.
2. 2.The 2023 amendment exempts land situated within 100 kilometres of India's international borders from the Act's purview for the construction of strategic linear projects of national importance.
3. 3.The 2023 amendment excludes the applicability of the Act to forest land that was recorded as having been converted for non-forest use on or before 12th December 1996.
4. 4.The 2023 amendment explicitly prohibits the establishment of eco-tourism facilities, zoos, and safaris within forest areas to prevent their commercialization.

How many of the above statements are correct?

Why this answer

There are two correct statements. Statement 2 and Statement 3 are correct. - Statement 1 is incorrect. The Supreme Court's landmark judgment in T.N. Godavarman Thirumulpad v. Union of India (1996) expanded the definition of 'forest' to include not just notified forests, but also any land recorded as forest in government records and any land that fits the dictionary meaning of a forest. - Statement 2 is correct. This is a key and widely discussed provision of the Forest (Conservation) Amendment Act, 2023, aimed at facilitating strategic and security-related projects. - Statement 3 is correct. The amendment specifies that the Act will not apply to land which was changed from forest-use to non-forest-use on or before 12th December, 1996, the date of the Godavarman judgment. - Statement 4 is incorrect. The amendment, in fact, explicitly lists activities such as the establishment of zoos, safaris, and eco-tourism facilities as permissible activities ancillary to conservation, rather than prohibiting them.

The static concept

Forest (Conservation) Act, 1980: Its scope, objectives, and the principle of prior approval for diverting forest land for non-forest purposes, as interpreted by the Supreme Court and modified by subsequent amendments.

With reference to the complex factors influencing the Indian Summer Monsoon, consider the following statements:

1. 1.A positive Indian Ocean Dipole (IOD) event invariably counteracts the negative impact of an El Niño event on the Indian summer monsoon, ensuring normal or above-normal rainfall.
2. 2.The eastward propagation of the Madden-Julian Oscillation (MJO) into the Maritime Continent (Phases 4-5) is strongly correlated with an active or vigorous phase of the Indian summer monsoon.
3. 3.Ocean Mean Temperature (OMT) is considered a more reliable predictor for monsoon rainfall than Sea Surface Temperature (SST) because it captures deeper ocean heat content which is less affected by transient surface weather.
4. 4.The development of the Somali Jet causes intense oceanic upwelling off the coast of East Africa, leading to warmer sea surface temperatures in the western Arabian Sea.

How many of the above statements are correct?

Why this answer

Only one statement is correct. Statement 1 is incorrect. The word 'invariably' is an extreme qualifier. While a positive IOD can mitigate the effects of an El Niño, it does not guarantee a normal monsoon. The interaction is complex, and a strong El Niño can still lead to deficient rainfall despite a positive IOD. Statement 2 is incorrect. The MJO's presence over the Maritime Continent (Indonesia, Philippines) in Phases 4-5 is associated with a suppressed or 'break' phase of the Indian monsoon, as it shifts the zone of convection eastward, away from the Indian subcontinent. Statement 3 is correct. OMT measures the thermal energy up to the 26°C isotherm depth, providing a more stable and representative measure of the ocean's heat potential that fuels the monsoon, unlike SST which only reflects the surface layer and can be volatile. Statement 4 is incorrect. The Somali Jet does cause intense upwelling, but upwelling brings cold, nutrient-rich water from the deep ocean to the surface. This process leads to *cooler*, not warmer, sea surface temperatures off the coast of Somalia.

The static concept

Indian Monsoon System: Mechanisms and influencing factors including ENSO, IOD, MJO, and regional circulation patterns like the Somali Jet.

Why this answer

Assertion (A) is true. Recombinant vector vaccines, like the AstraZeneca/Covishield vaccine, use a modified and non-replicating virus (often an adenovirus) as a vehicle to carry the genetic code for a specific antigen (like the SARS-CoV-2 spike protein) into human cells. The cells then produce the antigen, triggering an immune response. Reason (R) is false. A significant advantage of modern platforms like mRNA and viral vectors is their ability to induce a robust and broad immune response, which includes not only the humoral response (B-cells producing antibodies) but also a strong cell-mediated response (T-cells, which kill infected cells). The statement that they 'exclusively' stimulate humoral immunity is incorrect; their ability to activate T-cells is a key feature. Therefore, A is true but R is false.

The static concept

Biotechnology: Vaccine Platforms (mRNA, Viral Vector, Inactivated, Subunit) and Principles of Immunology (Humoral vs. Cell-Mediated Immunity).

Why this answer

The correct option is that Assertion (A) is true but Reason (R) is false. Assertion (A) is correct because net metering allows households to offset their electricity consumption with the power they generate, and get credited for any surplus power exported to the grid. This significantly reduces electricity bills and the payback period for the solar installation, making it economically viable. Reason (R) is incorrect as it inaccurately describes net metering. It confuses it with a Feed-in Tariff (FiT) system. Under net metering, the compensation for surplus power is typically credited at the prevailing retail tariff, not a premium pre-determined tariff that is 'consistently set higher'. In fact, many states are moving to 'net billing' where the export price is lower than the retail import price.

The static concept

Renewable Energy Policy & Grid Integration: Differentiating between Net Metering, Gross Metering, and Feed-in Tariffs as mechanisms for promoting distributed renewable energy generation.