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HCS (Haryana)Prelims2026General Studies
Question
Given below are two statements: Statement I : ISRO launched the XPoSat mission in January 2025 to study cosmic X-ray sources. Statement II : XPoSat is India's first dedicated mission to study X-ray polarization. In the light of the above statements, choose the correct answer from the options given below:
Options
- A Both Statement I and Statement II are true.
- B Both Statement I and Statement II are false.
- C Statement I is true but Statement II is false.
- D Statement I is false but Statement II is true.
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Correct Answer
D Statement I is false but Statement II is true.
Model Answer
X-ray Polarimeter Satellite (XPoSat)
- XPoSat was launched by ISRO on 1st January 2024 by the PSLV-C58 rocket from Satish Dhawan Space Centre, Sriharikota, and not in January 2025. Hence, statement I is false.
- It is India's first and the world's second dedicated polarimetry mission, after NASA's IXPE, to study the polarisation of X-rays emitted by bright astronomical sources such as pulsars, black hole binaries and active galactic nuclei. Hence, statement II is true.
- It carries two payloads, POLIX (Polarimeter Instrument in X-rays) developed by the Raman Research Institute and XSPECT (X-ray Spectroscopy and Timing) developed by the U R Rao Satellite Centre.
- The satellite has been placed in a low earth orbit of about 650 km with a mission life of about five years.