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Comprehensive Practice Set - Science & Technology: space-technology

Topic-wise practice set of 23 questions on space-technology for OPSC OAS Mains GS-III.

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    Part of the General Studies-III question bank for OPSC (OAS) Mains.

    A comprehensive, topic-wise practice set of 23 questions on Space Technology & Satellites for OPSC (OAS) Mains General Studies-III. 11 of them have been set in an actual paper — the years and exams are printed against each (2026, 2024, 2023, 2022, 2019, 2017, 2016, 2015, 2006). The rest are practice questions on the same syllabus points.

    Write to the paper. GS-III answers run from 5 to 20 marks depending on the question — check the marks against each one and size your answer accordingly. Attempt the dated questions first: those are the ones that have actually come.

    Previous year questions

    No.QuestionAsked in
    1

    Mention salient features of 'Mission Drishti'. Discuss the imaging techniques used in the satellite launched on 3rd May 2026. Why it is being considered world's first satellite of its kind?

    UPSC Mains GS-III 2026
    15m,250w
    2

    What is space debris? What are its challenges and redressal? How did it affect China's Spacecraft recently?

    OPSC OAS Mains 2024
    15m,250w
    3

    What are asteroids? How real is the threat of them causing the extinction of life? What strategies have been developed to prevent such a catastrophe?

    UPSC Mains GS-III 2024
    15m,250w
    4

    Discuss about India's space sector achievements in the year 2023 and 2024. What are the achievements of ISRO in 2023?

    OPSC OAS Mains 2023
    15m,250w
    5

    What is the main task of India's third moon mission which could not be achieved in its earlier mission? List the countries that have achieved this task. Introduce the subsystems in the spacecraft launched and explain the role of the Virtual Launch Control Centre' at the Vikram Sarabhai Space Centre which contributed to the successful launch from Sriharikota.

    UPSC Mains GS-III 2023
    250w/15m
    6

    Launched on 25th December, 2021, James Webb Space Telescope has been much in the news since then. What are its unique features which make it superior to its predecessor Space Telescopes? What are the key goals of this mission? What potential benefits does it hold for the human race?

    UPSC Mains GS-III 2022
    —
    7

    What is India's plan to have its own space station and how will it benefit our space programme?

    UPSC Mains GS-III 2019
    —
    8

    India has achieved remarkable successes in unmanned space missions including the Chandrayaan and Mars Orbiter Mission, but has not ventured into manned space mission, both in terms of technology and logistics? Explain critically.

    UPSC Mains GS-III 2017
    —
    9

    Discuss India's achievements in the field of Space Science and Technology. How the application of this technology has helped India in its socio‑economic development?

    UPSC Mains GS-III 2016
    —
    10

    What do you understand by 'Standard Positioning Systems' and 'Protection Positioning Systems' in the GPS era? Discuss the advantages India perceives from its ambitious IRNSS programme employing just seven satellites.

    UPSC Mains GS-III 2015
    —
    11

    Write a brief note on: UB/313.

    OPSC OAS Mains 2006
    GS Paper-I Q.14(c) · 4 marks

    Practice questions

    No.QuestionSource
    12

    Discuss India's achievements in the field of Space Science and Technology. How the application of this technology helped India in its socio-economic development?

    —
    13

    Discuss the factors responsible for the formation of space debris. Evaluate the repercussions of space debris accumulation.

    —
    14

    What are the main objectives of ISRO's Aditya-L1 mission and the significance of placing this spacecraft at Lagrange Point 1 (L1)? Exemplify its contribution in understanding the solar phenomena like coronal mass ejections, solar flares, and solar wind?

    —
    15

    Analyze the current status of the Space economy in India, focusing on potential areas of growth in the Indian downstream Space sector. Additionally, enumerate the challenges faced by the emerging Indian Private Space ecosystem.

    —
    16

    Discuss the key achievements of ISRO in satellite technology and its impact on India's communication infrastructure.

    —
    17

    Discuss the key features of Free Space Optical Communication (FSOC) technology and elaborate on its various applications in contemporary communication systems.

    —
    18

    Examine the applications and limitations of remote sensing technology for natural resource management in India. How can India use its space-based data and analysis to address the issues of climate change, biodiversity loss, and land degradation?

    —
    19

    Elucidate the objectives of Aditya L1 mission, India's first mission to study the Sun. How will it boost India's prestige and leadership in the space domain?

    —
    20

    Recently India's Chandrayaan-3 made a successful landing on the moon. Mention its main objectives and how does it differ from Chandrayaan 2 in terms of design and landing site? Also discuss the implications of its successful landing for India's space program and its global standing, while highlighting its superiority as compared to other missions of the world.

    —
    21

    How has India's development been influenced by advancements in space technology? Delve into the potential of deep tech in enhancing India's space exploration and research endeavours.

    —
    22

    Examine the idea of space habitation, considering its potential benefits and challenges.

    —
    23

    India's Aditya-L1 mission is a significant step forward in the country's space exploration endeavours. Discuss the objectives and technological advancements associated with the Aditya-L1 mission, highlighting its contributions to our understanding of the Sun and its impact on Earth's environment.

    —

    Sourced from the Odisha Public Service Commission where applicable. opsc.gov.in. EduSaint is not affiliated with OPSC.