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Space - Quantum Communication

1 UPSC Prelims MCQs tagged "Space - Quantum Communication". Free practice with answer keys, explanations, and timed mock tests on Anantam IAS.

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With reference to ISRO’s achievements in Quantum Communication, which of the following statement(s) is/are…
With reference to ISRO's achievements in Quantum Communication, which of the following statement(s) is/are true?
1. AOnly 1
2. BOnly 2
3. CBoth 1 and 2
4. DNeither 1 nor 2
Answer and explanation
Correct answer: A
ISRO demonstrated free-space Quantum Key Distribution over about 300 metres at the Space Applications Centre in Ahmedabad, including live video conferencing using quantum-key-encrypted signals, so statement 1 is correct. Statement 2 is false because ISRO hasn't established a mainland-to-deep-space satellite quantum link, and India isn't the first country to do so.
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Science & Technology UPSC GPSC-2026 Hard