Space Technology PYQs

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1. Prelims 2026Q71Space TechnologyAnswer disputed

   Consider the following statements with regard to involvement of private entities in India’s space programme :

   1.The Indian National Space Promotion and Authorisation Centre (IN-SPACe) is an autonomous agency formed to facilitate participation of private entities.

   2.Agnikul Cosmos launched the world’s first flight using 3D-printed rocket engine.

   3.Skyroot Aerospace has developed liquid fuel for GSLV.

   Which of the statements given above is/are correct ?

   a1 onlyb2 and 3 onlyc1 and 2 onlyd1, 2 and 3
2. Prelims 2025Q83Space TechnologyAnswer disputed

   Consider the following space missions :

   I.Axiom-4

   II.SpaDeX

   III.Gaganyaan

   How many of the space missions given above encourage and support microgravity research?

   aOnly onebOnly twocAll the threedNone
3. Prelims 2025Q94Space Technology

   GPS-Aided Geo Augmented Navigation (GAGAN) uses a system of ground stations to provide necessary augmentation. Which of the following statements is/are correct in respect of GAGAN?

   I.It is designed to provide additional accuracy and integrity.

   II.It will allow more uniform and high quality air traffic management.

   III.It will provide benefits only in aviation but not in other modes of transportation.

   Select the correct answer using the code given below.

   aI, II and IIIbII and III onlycI onlydI and II only
4. Prelims 2024Q31Space Technology

   With reference to radioisotope thermoelectric generators (RTGs), consider the following statements :

   1.RTGs are miniature fission reactors.

   2.RTGs are used for powering the onboard systems of spacecrafts.

   3.RTGs can use Plutonium-238, which is a by-product of weapons development.

   Which of the statements given above are correct ?

   a1 and 2 onlyb2 and 3 onlyc1 and 3 onlyd1, 2 and 3
5. Prelims 2024Q32Space Technology

   Consider the following statements :

   Statement-I :

   Giant stars live much longer than dwarf stars.

   Statement-II :

   Compared to dwarf stars, giant stars have a greater rate of nuclear reactions.

   Which one of the following is correct in respect of the above statements ?

   aBoth Statement-I and Statement-II are correct and Statement-II explains Statement-IbBoth Statement-I and Statement-II are correct, but Statement-II does not explain Statement-IcStatement-I is correct, but Statement-II is incorrectdStatement-I is incorrect, but Statement-II is correct
6. Prelims 2023Q56Space Technology

   Consider the following pairs :

   Objects in space : Description

   1.Cepheids : Giant clouds of dust and gas in space

   2.Nebulae : Stars which brighten and dim periodically

   3.Pulsars : Neutron stars that are formed when massive stars run out of fuel and collapse

   How many of the above pairs are correctly matched?

   aOnly onebOnly twocAll threedNone
7. Prelims 2023Q57Space Technology

   Which one of the following countries has its own Satellite Navigation System?

   aAustraliabCanadacIsraeldJapan
8. Prelims 2022Q40Space Technology

   If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth ?

   1.GPS and navigation systems could fail.

   2.Tsunamis could occur at equatorial regions.

   3.Power grids could be damaged.

   4.Intense auroras could occur over much of the Earth.

   5.Forest fires could take place over much of the planet.

   6.Orbits of the satellites could be disturbed.

   7.Shortwave radio communication of the aircraft flying over polar regions could be interrupted.

   Select the correct answer using the code given below :

   a1, 2, 4 and 5 onlyb2, 3, 5, 6 and 7 onlyc1, 3, 4, 6 and 7 onlyd1, 2, 3, 4, 5, 6 and 7
9. Prelims 2021Q76Space Technology

   Which one of the following is a reason why astronomical distances are measured in light-years?

   aDistances among stellar bodies do not change.bGravity of stellar bodies does not change.cLight always travels in straight line.dSpeed of light is always same.
10. Prelims 2020Q43Space Technology

    “The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometres long, with lasers shining between the craft.” The experiment in question refers to

    aVoyager-2bNew HorizonscLISA PathfinderdEvolved LISA
11. Prelims 2019Q32Space Technology

    For the measurement/estimation of which of the following are satellite images/remote sensing data used?

    1.Chlorophyll content in the vegetation of a specific location

    2.Greenhouse gas emissions from rice paddies of a specific location

    3.Land surface temperatures of a specific location

    Select the correct answer using the code given below.

    a1 onlyb2 and 3 onlyc3 onlyd1, 2 and 3
12. Prelims 2019Q97Space Technology

    Recently, scientists observed the merger of giant ‘blackholes’ billions of light-years away from the Earth. What is the significance of this observation?

    a‘Higgs boson particles’ were detected.b‘Gravitational waves’ were detected.cPossibility of inter-galactic space travel through ‘wormhole’ was confirmed.dIt enabled the scientists to understand ‘singularity’.
13. Prelims 2018Q55Space Technology

    In which of the following areas can GPS technology be used ?

    1.Mobile phone operations

    2.Banking operations

    3.Controlling the power grids

    Select the correct answer using the code given below :

    a1 onlyb2 and 3 onlyc1 and 3 onlyd1, 2 and 3
14. Prelims 2018Q61Space Technology

    With reference to the Indian Regional Navigation Satellite System (IRNSS), consider the following statements :

    1.IRNSS has three satellites in geostationary and four satellites in geosynchronous orbits.

    2.IRNSS covers entire India and about 5500 sq. km beyond its borders.

    3.India will have its own satellite navigation system with full global coverage by the middle of 2019.

    Which of the statements given above is/are correct ?

    a1 onlyb1 and 2 onlyc2 and 3 onlydNone
15. Prelims 2018Q95Space Technology

    With reference to India's satellite launch vehicles, consider the following statements :

    1.PSLVs launch the satellites useful for Earth resources monitoring whereas GSLVs are designed mainly to launch communication satellites.

    2.Satellites launched by PSLV appear to remain permanently fixed in the same position in the sky, as viewed from a particular location on Earth.

    3.GSLV Mk III is a four-staged launch vehicle with the first and third stages using solid rocket motors; and the second and fourth stages using liquid rocket engines.

    Which of the statements given above is/are correct ?

    a1 onlyb2 and 3c1 and 2d3 only
16. Prelims 2017Q44Space Technology

    The terms 'Event Horizon', 'Singularity', 'String Theory' and 'Standard Model' are sometimes seen in the news in the context of

    aObservation and understanding of the UniversebStudy of the solar and the lunar eclipsescPlacing satellites in the orbit of the EarthdOrigin and evolution of living organisms on the Earth
17. Prelims 2017Q87Space Technology

    What is the purpose of 'evolved Laser Interferometer Space Antenna (eLISA)' project ?

    aTo detect neutrinosbTo detect gravitational wavescTo detect the effectiveness of missile defence systemdTo study the effect of solar flares on our communication systems
18. Prelims 2016Q87Space Technology

    With reference to 'Astrosat', the astronomical observatory launched by India, which of the following statements is/are correct?

    1.Other than USA and Russia, India is the only country to have launched a similar observatory into space.

    2.Astrosat is a 2000 kg satellite placed in an orbit at 1650 km above the surface of the Earth.

    Select the correct answer using the code given below.

    a1 onlyb2 onlycBoth 1 and 2dNeither 1 nor 2
19. Prelims 2016Q91Space Technology

    Consider the following statements :

    The Mangalyaan launched by ISRO

    1.is also called the Mars Orbiter Mission

    2.made India the second country to have a spacecraft orbit the Mars after USA

    3.made India the only country to be successful in making its spacecraft orbit the Mars in its very first attempt

    Which of the statements given above is/are correct?

    a1 onlyb2 and 3 onlyc1 and 3 onlyd1, 2 and 3
20. Prelims 2015Q45Space Technology

    The term ‘Goldilocks Zone’ is often seen in the news in the context of

    athe limits of habitable zone above the surface of the Earthbregions inside the Earth where shale gas is availablecsearch for the Earth-like planets in outer spacedsearch for meteorites containing precious metals
21. Prelims 2015Q71Space Technology

    In which of the following activities are Indian Remote Sensing (IRS) satellites used?

    1.Assessment of crop productivity

    2.Locating groundwater resources

    3.Mineral exploration

    4.Telecommunications

    5.Traffic studies

    Select the correct answer using the code given below.

    a1, 2 and 3 onlyb4 and 5 onlyc1 and 2 onlyd1, 2, 3, 4 and 5
22. Prelims 2014Q68Space Technology

    Which of the following pairs is/are correctly matched?

    Spacecraft : Purpose

    1.Cassini-Huygens : Orbiting the Venus and transmitting data to the Earth

    2.Messenger : Mapping and investigating the Mercury

    3.Voyager 1 and 2 : Exploring the outer solar system

    Select the correct answer using the code given below.

    a1 onlyb2 and 3 onlyc1 and 3 onlyd1, 2 and 3
23. Prelims 2012Q19Space TechnologyAnswer disputed

    Which of the following is/are cited by the scientists as evidence/evidences for the continued expansion of universe?

    1.Detection of microwaves in space

    2.Observation of redshift phenomenon in space

    3.Movement of asteroids in space

    4.Occurrence of supernova explosions in space

    Select the correct answer using the codes given below :

    a1 and 2b2 onlyc1, 3 and 4dNone of the above can be cited as evidence
24. Prelims 2011Q3Space Technology

    Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when:

    1.The orbit is geosynchronous.

    2.The orbit is circular.

    3.The orbit lies in the plane of the Earth’s equator.

    4.The orbit is at an altitude of 22,236 km.

    Select the correct answer using the codes given below:

    a1, 2 and 3 onlyb1, 3 and 4 onlyc2 and 4 onlyd1, 2, 3 and 4
25. Prelims 2011Q86Space Technology

    What is the difference between asteroids and comets?

    1.Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.

    2.Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.

    3.Comets show a perceptible glowing tail, while asteroids do not.

    Which of the statements given above is/are correct?

    a1 and 2 onlyb1 and 3 onlyc3 onlyd1, 2 and 3
26. Prelims 2010Q7Space Technology

    Consider the following statements:

    The satellite Oceansat-2 launched by India helps in

    1.Estimating the water vapour content in the atmosphere.

    2.Predicting the onset of monsoons.

    3.Monitoring the pollution of coastal waters.

    Which of the statements given above is/are correct?

    a1 and 2 onlyb2 onlyc1 and 3 onlyd1, 2 and 3
27. Prelims 2010Q110Space Technology

    In the context of space technology, what is “Bhuvan”, recently in the news?

    aA mini satellite launched by ISRO for promoting the distance education in IndiabThe name given to the next Moon Impact Probe, for Chandrayaan-IIcA geoportal of ISRO with 3-D imaging capabilities of IndiadA space telescope developed by India
28. Prelims 2009Q44Space Technology

    Who of the following scientists proved that the stars with mass less than 1·44 times the mass of the Sun end up as White Dwarfs when they die ?

    aEdwin HubblebS. ChandrashekharcStephen HawkingdSteven Weinberg
29. Prelims 2009Q128Space Technology

    India has recently landed its Moon Impact Probe on the Moon. Among the following countries, which one landed such probe on the Moon earlier ?

    aAustraliabCanadacChinadJapan
30. Prelims 2008Q18Space Technology

    Selene-1, the lunar orbiter mission belongs to which one of the following?

    aChinabEuropean UnioncJapandUSA