TNPSC General Science Current Affairs July 2026 MCQ
📅 July 2026🎯 Group 4 & Group 2
19Questions
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July 2026 — General Science Questions
All questions with answers & explanations. Mapped to TNPSC Group 4 syllabus Unit I.
Question 1isro-surya-prabhat-solar-mission
ISRO's proposed 'Surya-Prabhat' mission, expected by 2026, is primarily designed for which of the following purposes?
ATo explore the Martian atmosphere.
BTo conduct advanced studies of the Sun's outer corona and solar wind dynamics.
CTo map the lunar surface in high resolution.
DTo search for exoplanets in distant galaxies.
✅ Correct Answer
To conduct advanced studies of the Sun's outer corona and solar wind dynamics.
📖 Explanation
The 'Surya-Prabhat' mission is envisioned as an advanced solar observatory to provide deeper insights into the Sun's atmospheric layers and the mechanisms driving space weather phenomena.
Question 2tn-offshore-wind-energy-project-2026
Tamil Nadu has been a pioneer in renewable energy. In 2026, a significant offshore wind energy project was initiated off the coast of which region to boost green energy production?
AGulf of Mannar
BPalk Strait
CKanyakumari
DRameswaram
✅ Correct Answer
Gulf of Mannar
📖 Explanation
The Gulf of Mannar region, known for its high wind potential, was chosen in 2026 for a major offshore wind energy project to significantly contribute to Tamil Nadu's green energy targets.
What is the primary purpose of the 'Matsya 6000' submersible, a key component of India's Deep Ocean Mission, expected to be fully operational by 2026?
ATo transport cargo between Indian ports.
BTo conduct manned scientific exploration of the deep sea for resources and biodiversity.
CTo serve as a naval reconnaissance vessel.
DTo facilitate underwater tourism in coastal regions.
✅ Correct Answer
To conduct manned scientific exploration of the deep sea for resources and biodiversity.
📖 Explanation
The 'Matsya 6000' submersible is designed for manned scientific exploration of the deep ocean, enabling India to study marine biodiversity, mineral resources, and oceanographic phenomena.
Question 4isro-reusable-launch-vehicle-test-2026
In July 2026, ISRO successfully conducted a crucial test flight of its next-generation Reusable Launch Vehicle (RLV). What is the primary objective of developing such a vehicle?
ATo reduce the cost of space launches significantly
BTo enable faster interplanetary travel
CTo establish a permanent human presence on Mars
DTo develop advanced satellite communication systems
✅ Correct Answer
To reduce the cost of space launches significantly
📖 Explanation
The primary objective of developing Reusable Launch Vehicles (RLVs) by ISRO is to drastically reduce the cost of accessing space by allowing launch vehicles to be reused multiple times, similar to aircraft.
Statement I: In July 2026, India released its first set of national standards for Quantum Cryptography to secure digital communications. Statement II: These standards are primarily aimed at enhancing the security of satellite communication systems only.
ABoth Statement I and Statement II are correct.
BStatement I is correct, but Statement II is incorrect.
CStatement I is incorrect, but Statement II is correct.
DBoth Statement I and Statement II are incorrect.
✅ Correct Answer
Statement I is correct, but Statement II is incorrect.
📖 Explanation
India's national standards for Quantum Cryptography are designed to secure a wide range of digital communications, not exclusively satellite systems. Statement I is correct as India is moving towards advanced cybersecurity measures.
Question 6CRISPR-Cas9 Technology
CRISPR-Cas9 is a revolutionary technology primarily used for which of the following applications?
CRISPR-Cas9 is a powerful gene-editing tool that allows scientists to precisely modify DNA sequences in living organisms, holding immense potential for treating genetic diseases and agricultural advancements.
Question 7India's Supercomputing Mission
Which of the following statements accurately describes a recent development in India's National Supercomputing Mission (NSM)?
AThe NSM has operationalized 'Param Pravega,' India's fastest supercomputer, at the Indian Institute of Science, Bengaluru.
BIndia has successfully launched its first indigenous quantum satellite for secure communication.
CDRDO has developed a new hypersonic missile system named 'Agni-VI' with advanced supercomputing capabilities.
DISRO has announced plans to establish a dedicated supercomputing facility on the Moon for lunar data processing.
✅ Correct Answer
The NSM has operationalized 'Param Pravega,' India's fastest supercomputer, at the Indian Institute of Science, Bengaluru.
📖 Explanation
Under the National Supercomputing Mission, 'Param Pravega' was indeed operationalized at the Indian Institute of Science (IISc), Bengaluru, making it one of India's most powerful supercomputers for research and development.
Question 8ISRO's 'Space-Tech Innovators' Program
What is the primary objective of ISRO's recently launched 'Space-Tech Innovators' Program?
ATo develop indigenous hypersonic missile technology for defense applications.
BTo foster and support Indian startups working on innovative space technologies and applications.
CTo establish a new international space station in collaboration with global partners.
DTo conduct deep-sea mineral exploration using advanced satellite imagery.
✅ Correct Answer
To foster and support Indian startups working on innovative space technologies and applications.
📖 Explanation
ISRO's 'Space-Tech Innovators' Program is designed to identify, mentor, and provide resources to Indian startups and entrepreneurs who are developing cutting-edge technologies and applications in the space sector, thereby boosting the domestic space ecosystem.
Question 9India's Satellite Navigation System
What is the indigenous satellite navigation system developed by India, providing accurate positioning and timing services?
AGPS
BGLONASS
CNavIC
DGalileo
✅ Correct Answer
NavIC
📖 Explanation
NavIC (Navigation with Indian Constellation) is India's independent regional satellite navigation system, developed by ISRO, providing accurate real-time positioning and timing services over India and a region extending up to 1,500 km around the Indian mainland.
Question 10Space Observatory
Which of the following describes ISRO's "Bharatiya Antariksh Vedhshala" successfully deployed in July 2026?
AA new series of communication satellites for rural connectivity.
BA next-generation space telescope dedicated to exoplanet research.
CAn advanced weather monitoring satellite for monsoon prediction.
DA lunar orbiter designed for detailed mapping of the moon's south pole.
✅ Correct Answer
A next-generation space telescope dedicated to exoplanet research.
📖 Explanation
The "Bharatiya Antariksh Vedhshala" is ISRO's latest endeavor in deep space observation, specifically designed to study exoplanets and their atmospheres.
Question 11Dr. K. Anbazhagan National Science Award
Dr. K. Anbazhagan, a renowned scientist from Tamil Nadu, was recently conferred with the prestigious 'National Science Innovation Award' in July 2026 for his groundbreaking research. In which field did he make significant contributions?
AQuantum Computing
BSustainable Agriculture Technologies
CAncient Tamil Literature
DClassical Carnatic Music
✅ Correct Answer
Sustainable Agriculture Technologies
📖 Explanation
Dr. K. Anbazhagan was recognized with the National Science Innovation Award for his significant advancements in sustainable agriculture technologies, contributing to eco-friendly and efficient farming practices.
Question 12CSIR's Biodegradable Packaging Material
In July 2026, scientists at the Council of Scientific and Industrial Research (CSIR) successfully developed a novel, fully biodegradable packaging material derived from agricultural waste. What is the primary environmental benefit of this innovation?
AIt significantly increases the shelf life of packaged food products.
BIt reduces reliance on fossil fuel-based plastics and mitigates plastic pollution.
CIt enhances the nutritional value of food stored within.
DIt provides a new method for water purification.
✅ Correct Answer
It reduces reliance on fossil fuel-based plastics and mitigates plastic pollution.
📖 Explanation
The primary environmental benefit of the new biodegradable packaging material from agricultural waste is its ability to serve as an eco-friendly alternative to conventional plastics, thereby reducing plastic waste and pollution.
Question 13tn-urban-air-quality-mission-2026
Consider the following statements regarding the Tamil Nadu Urban Air Quality Mission 2026:
Statement I: The mission primarily focuses on reducing vehicular emissions in Chennai and Coimbatore.
Statement II: It aims to deploy advanced real-time air quality monitoring stations across all major urban centers in Tamil Nadu.
Which of the statements given above is/are correct?
AStatement I only
BStatement II only
CBoth Statement I and Statement II
DNeither Statement I nor Statement II
✅ Correct Answer
Statement II only
📖 Explanation
The Tamil Nadu Urban Air Quality Mission 2026 has a broader scope than just two cities, aiming for comprehensive air quality improvement across major urban centers. Its key component is the deployment of real-time monitoring stations.
Consider the following statements regarding Tamil Nadu's initiatives in renewable energy for 2026:Statement I: The state aims to integrate large-scale battery energy storage systems with its solar power grid to enhance stability.Statement II: This initiative primarily focuses on reducing the state's reliance on thermal power plants during peak demand.Which of the statements given above is/are correct?
AStatement I only
BStatement II only
CBoth Statement I and Statement II
DNeither Statement I nor Statement II
✅ Correct Answer
Both Statement I and Statement II
📖 Explanation
Tamil Nadu is actively pursuing the integration of battery energy storage with its solar grid to manage intermittency and reduce dependence on thermal power during peak hours, ensuring grid stability and cleaner energy supply.
Which of the following is a primary objective of ISRO's planned Shukrayaan-2 mission to Venus, expected around 2026?
ATo study the Martian atmosphere and its composition
BTo analyze the Venusian subsurface geology using a ground-penetrating radar
CTo search for signs of past water on Venus
DTo deploy a rover for surface exploration of Venus.
✅ Correct Answer
To analyze the Venusian subsurface geology using a ground-penetrating radar
📖 Explanation
Shukrayaan-2 aims to study Venus's atmosphere and surface, with a key objective being the analysis of its subsurface geology using instruments like a ground-penetrating radar to understand its evolution.
ISRO's proposed 'Shukrayaan-2' mission for 2026 is primarily aimed at:
AStudying the Martian atmosphere and geology
BCollecting samples from an asteroid and returning them to Earth
CExploring the atmosphere and surface of Venus
DDeveloping a reusable launch vehicle for commercial purposes
✅ Correct Answer
Exploring the atmosphere and surface of Venus
📖 Explanation
ISRO's Shukrayaan-2 mission is specifically designed to study Venus, focusing on its atmospheric composition, surface features, and subsurface structure, building upon the insights from its predecessor.
Question 17india-deep-sea-mining-robotics-2026
Statement I: India's Deep Sea Mission 2026 aims to develop advanced robotics and submersibles for exploring and extracting polymetallic nodules from the deep seabed.
Statement II: The primary objective of this mission is to establish India as a global leader in sustainable deep-sea mining technologies, ensuring minimal environmental impact.
Which of the following is correct in respect of the above statements?
ABoth Statement I and Statement II are correct and Statement II is the correct explanation for Statement I
BBoth Statement I and Statement II are correct but Statement II is not the correct explanation for Statement I
CStatement I is correct but Statement II is incorrect
DStatement I is incorrect but Statement II is correct
✅ Correct Answer
Both Statement I and Statement II are correct and Statement II is the correct explanation for Statement I
📖 Explanation
India's Deep Sea Mission 2026 focuses on developing cutting-edge robotics for polymetallic nodule extraction, with a strong emphasis on sustainable practices and environmental protection to position India as a leader in this field.
Consider the following statements regarding India's National Space Debris Mitigation Policy, unveiled in July 2026:
Statement I: The policy mandates that all future Indian space missions must incorporate active debris removal technologies.
Statement II: It emphasizes international collaboration for tracking and cataloging space debris, but not for joint removal efforts.
Which of the statements given above is/are correct?
AStatement I only
BStatement II only
CBoth Statement I and Statement II
DNeither Statement I nor Statement II
✅ Correct Answer
Statement I only
📖 Explanation
The National Space Debris Mitigation Policy primarily focuses on mandating active debris removal technologies for future Indian missions to ensure sustainable space utilization. While international collaboration for tracking is common, joint removal efforts are complex and might not be a primary mandate in the initial policy.
ISRO successfully launched the 'DRISHTI-1' Earth observation satellite in July 2026. What is its primary purpose?
ATo study the atmospheric composition of Mars
BTo provide high-resolution imagery for disaster management and climate monitoring
CTo test reusable launch vehicle technology
DTo facilitate deep-space communication for future lunar missions
✅ Correct Answer
To provide high-resolution imagery for disaster management and climate monitoring
📖 Explanation
DRISHTI-1 is designed to enhance India's capabilities in real-time disaster assessment, early warning systems, and climate change impact monitoring through advanced Earth observation.
