Space Missions MCQ — 51 Practice Questions with Answers

Explanation

The Assertion is true because the successful SSLV-D3/EOS-08 flight completed the SSLV Development Project. The Reason is also true because the same success enabled operational SSLV missions by Indian industry and NSIL. The Reason explains the Assertion by stating the practical transition that followed project completion; treating the Reason as unrelated, denying the Reason, or denying the Assertion conflicts with the cited fact.

Explanation

ISRO's 2025 achievements describe POEM-04 as part of the PSLV-C60/SpaDeX mission, completing more than 1000 orbits and demonstrating a robotic arm in orbit and seed germination in microgravity. Reversing the sequence of association and outcomes, adding a lunar-landing claim, shifting it to a GSLV mission, reducing the orbital count to more than 100, or moving seed germination to Earth all conflict with the cited description.

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.

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.

Explanation

The Indian Space Science Data Centre is the nodal centre for archiving ISRO's planetary mission data, including Chandrayaan-3 data. The National Remote Sensing Centre, Space Applications Centre, and Vikram Sarabhai Space Centre are real ISRO-related institutions, but the cited fact names the data-archiving nodal centre as the Indian Space Science Data Centre.