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MCQ

Space Missions MCQ - Practice Questions with Answers

Solve 53 Space Missions questions for RAS/RPSC preparation.

Practice questions

Q1During the POEM-3 fuel-cell test, arrange the following in the correct operational order: 1. Hydrogen and oxygen were available onboard in high-pressure vessels. 2. The fuel-cell system used these onboard gases during the test. 3. Power generation of 180 W was recorded. Which sequence is correct?

A 1, 3, 2
B 3, 1, 2
C 2, 1, 3
D 1, 2, 3
Explanation

The cited fact says 180 W power was generated from onboard hydrogen and oxygen stored in high-pressure vessels. The sound operational order is therefore storage of hydrogen and oxygen onboard in high-pressure vessels, their use by the fuel-cell system during the test, and then the recorded generation of 180 W. Any order that places power generation before gas availability or gas use breaks that stated relationship.

Q2Match the elements of the Gaganyaan TV-D1 Test Vehicle with their correct descriptions: List I 1. Propulsion configuration 2. Engine 3. Forward-end assembly List II a. Modified VIKAS engine b. Crew Module and Crew Escape System c. Liquid-propelled single-stage vehicle Select the correct match.

A 1-b, 2-a, 3-c
B 1-a, 2-c, 3-b
C 1-c, 2-b, 3-a
D 1-c, 2-a, 3-b
Explanation

The correct pairing is: propulsion configuration with a liquid-propelled single-stage vehicle, engine with a modified VIKAS engine, and forward-end assembly with the Crew Module and Crew Escape System. Pairings that put the engine as the vehicle configuration, put the Crew Module as propulsion, or place the Crew Escape System as the engine contradict the cited description.

Q3Which of the following correctly describes the India-Sweden Memorandum of Understanding signed in May 2026 concerning the ISRO Shukrayaan mission?

A It enables joint Mars exploration with a launch in March 2027
B It provides for European Space Agency leadership of the Shukrayaan mission
C It allows the Swedish National Space Agency to participate in the Venus Orbiter Mission targeting a March 2028 launch and Venus orbit insertion in July 2028
D It launches a joint lunar landing mission scheduled for 2027
Explanation

India and Sweden signed an MoU enabling the Swedish National Space Agency to participate in ISRO's Venus Orbiter Mission Shukrayaan, which targets a March 2028 launch and Venus orbit insertion in July 2028. The mission is not about Mars, the Moon, or ESA leadership.

Q4Assertion: The Chandrayaan-3 Lander Module separated successfully from the Propulsion Module on August 17, 2023. Reason: The cited ISRO mission record gives August 17, 2023 as the successful separation date of the Lander Module from the Propulsion Module. Choose the correct answer.

A Both the Assertion and the Reason are true, and the Reason correctly explains the Assertion.
B The Assertion is false, but the Reason is true.
C The Assertion is true, but the Reason is false.
D Both the Assertion and the Reason are true, but the Reason does not correctly explain the Assertion.
Explanation

The Assertion is true because the cited ISRO fact states that the Chandrayaan-3 Lander Module separated successfully from the Propulsion Module on August 17, 2023. The Reason is also true and directly explains the Assertion because it points to the same recorded mission event. Claims that the Reason does not explain the Assertion, that the Reason is false, or that the Assertion is false all contradict the cited fact.

Q5Match the Aditya-L1 institutional roles with the correct institutions. List I 1. Spacecraft design and realisation 2. Payload development contributors List II a. UR Rao Satellite Centre b. Indian scientific laboratories including IIA, IUCAA and ISRO c. Satish Dhawan Space Centre d. Vikram Sarabhai Space Centre

A 1-c, 2-d
B 1-d, 2-c
C 1-a, 2-b
D 1-b, 2-a
Explanation

Aditya-L1 was designed and realised at UR Rao Satellite Centre, while its payloads were developed by Indian scientific laboratories including IIA, IUCAA and ISRO. Satish Dhawan Space Centre and Vikram Sarabhai Space Centre are important ISRO centres, but they are not the institutions named in the cited fact for these two Aditya-L1 roles.

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6Assertion: Aditya-L1's halo-orbit insertion around Sun-Earth L1 was accomplished on January 6, 2024 at about 16:00 IST. Reason: The manoeuvre placed Aditya-L1 around the Earth-Moon L1 point. Choose the correct answer.

ABoth the Assertion and the Reason are true, but the Reason does not correctly explain the Assertion.
BThe Assertion is false, but the Reason is true.
CThe Assertion is true, but the Reason is false.
DBoth the Assertion and the Reason are true, and the Reason correctly explains the Assertion.

7Assertion: NISAR weighs 2392 kg and is described as the first satellite to observe Earth with dual-frequency SAR. Reason: Its dual-frequency SAR observation uses NASA's L-band and ISRO's S-band payloads. Choose the correct answer.

AThe Assertion is false, but the Reason is true
BBoth the Assertion and the Reason are true, but the Reason does not explain the Assertion
CBoth the Assertion and the Reason are true, and the Reason correctly explains the Assertion
DThe Assertion is true, but the Reason is false

8Which pair correctly gives Aditya-L1's selected halo orbit distance from Earth and its approximate orbital period?

AAbout 1.5 lakh km; about 27.3 Earth days
BAbout 3.84 lakh km; about 29.5 Earth days
CAbout 15 lakh km; about 365.25 Earth days
DAbout 15 lakh km; about 177.86 Earth days

9Match Aditya-L1 launch particulars with the correct details: List I 1. Launch vehicle 2. Launch date 3. Launch site 4. Initial elliptical parking orbit List II a. September 2, 2023 b. SDSC SHAR c. PSLV-C57 d. 235.6 km by 19502.7 km Select the correct code.

A1-b, 2-a, 3-c, 4-d
B1-c, 2-a, 3-d, 4-b
C1-c, 2-a, 3-b, 4-d
D1-a, 2-c, 3-b, 4-d

10Consider the following assertion-reason pair about GSAT-N2: Assertion: GSAT-N2 can be described as an NSIL mission with the satellite developed by UR Rao Satellite Centre. Reason: Its communication payloads were provided by the Space Applications Centre for New Space India Limited. Choose the correct answer.

ABoth the Assertion and the Reason are true, but the Reason does not correctly explain the Assertion
BThe Assertion is true, but the Reason is false
CBoth the Assertion and the Reason are true, and the Reason correctly explains the Assertion
DThe Assertion is false, but the Reason is true

11Which of the following is not a space mission launched by ISRO?

AChandrayaan
BMangalyaan
CAditya-L1
DSpace Shuttle programme

12The Government of India declared which date as National Space Day to mark Chandrayaan-3's safe soft landing and Pragyaan rover deployment near the lunar South Pole?

ASeptember 2
BAugust 23
CJanuary 6
DJuly 14

13Consider the following Assertion and Reason about the SSLV-D3/EOS-08 flight: Assertion: The successful SSLV-D3/EOS-08 flight marked the completion of the SSLV Development Project. Reason: Its success enabled operational SSLV missions by Indian industry and NSIL. Select the correct answer.

AThe Assertion is false, but the Reason is true
BThe Assertion is true, but the Reason is false
CBoth the Assertion and the Reason are true, and the Reason correctly explains the Assertion
DBoth the Assertion and the Reason are true, but the Reason does not correctly explain the Assertion

14With reference to the POLIX payload on XPoSat, consider the following statements: 1. It is designed to measure X-ray polarisation. 2. Its operating energy band is 8-30 keV. 3. It is intended for about 500 potential cosmic sources. Which of the statements given above are correct?

A2 and 3 only
B1, 2 and 3
C1 and 2 only
D1 and 3 only

15Consider the following statements about Chandrayaan-3's lunar-orbit insertion. 1. Chandrayaan-3 was inserted into lunar orbit on August 5, 2023. 2. The achieved orbit was 164 km x 18074 km. 3. The achieved orbit stated for that insertion was 25 km x 134 km. 4. The Lander Module separated from the Propulsion Module on the same date. Which statements are correct?

AStatements 1, 2 and 4 only
BStatements 1 and 2 only
CStatements 2 and 4 only
DStatements 1 and 3 only

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