The TV-D1 mission of October 2023 was conducted mainly to test which system of Gaganyaan?

The correct answer is C, the human-rated LVM3. Gaganyaan will fly on the LVM3, the heaviest Indian launch vehicle, modified and certified for carrying human beings and then written as HLVM3. It is a three stage vehicle with two solid strap-on boosters, a liquid core stage and a cryogenic upper stage, and human rating adds wider structural margins, redundant systems and extra checks.

Option A, the PSLV-XL, is the workhorse used for remote sensing satellites and for Chandrayaan-1 and Mangalyaan, but it cannot lift a crewed spacecraft. Option B, the GSLV Mk II, carries communication satellites of about two tonnes to geosynchronous transfer orbit and is too small for this payload. Option D, the SSLV, is the small satellite launch vehicle meant for payloads of a few hundred kilograms. The LVM3 was earlier called the GSLV Mk III, which is why both names appear in question papers.

The correct answer is A, Rakesh Sharma. Rakesh Sharma, then a Squadron Leader in the Indian Air Force, became the first Indian in space on 3 April 1984. He flew on the Soviet spacecraft Soyuz T-11 to the Salyut 7 space station under the Interkosmos programme and spent about eight days in orbit, and he was awarded the Ashoka Chakra.

Option B, Kalpana Chawla, was the first woman of Indian origin in space, but she flew for NASA in 1997, thirteen years later. Option C, Ravish Malhotra, was the backup cosmonaut for the same 1984 mission and trained alongside Rakesh Sharma but did not fly, which makes him the strongest distractor. Option D, Sunita Williams, is an American astronaut of Indian origin who flew long duration missions to the International Space Station. Only Rakesh Sharma flew as an Indian citizen representing India.

The correct answer is B, Soyuz T-11. Rakesh Sharma flew on Soyuz T-11, launched from Baikonur on 2 April 1984, and docked with the Soviet space station Salyut 7. The flight was part of the Interkosmos programme, under which the Soviet Union carried cosmonauts of friendly countries, and Sharma carried out experiments in biomedicine and remote sensing.

Option A, Vostok 1, carried Yuri Gagarin, the first human in space, in April 1961. Option C, Apollo 11, was the American mission that landed Neil Armstrong and Buzz Aldrin on the Moon in July 1969. Option D, Shenzhou-5, carried Yang Liwei in October 2003 and made China the third country to launch a human being into orbit on its own. Keeping these four spacecraft and their firsts apart is the point of the question.

The correct answer is A, the crew module and the service module. The crew module is the pressurised double walled cabin where the astronauts live, and it is the only part that returns to Earth, protected by a heat shield and lowered by parachutes. The service module is an unpressurised section carrying propulsion, power generation, thermal control and other support systems, and it is separated before re-entry.

Option B, lander and rover, describes Chandrayaan-3, where Vikram and Pragyan worked on the Moon. Option C, orbiter and propulsion module, describes the earlier lunar missions, which had to place a spacecraft in lunar orbit. Option D is wrong because the cryogenic stage belongs to the launch vehicle and burns out long before orbit is reached, so it is never part of the spacecraft. Knowing which part comes back is the detail most often tested.

The correct answer is B, Bengaluru. The Human Space Flight Centre, set up in 2019 as the ISRO centre responsible for the Gaganyaan programme, works from Bengaluru, which is also the location of the ISRO headquarters, the U R Rao Satellite Centre and the ISRO Telemetry, Tracking and Command Network.

Option A, Thiruvananthapuram, is the home of the Vikram Sarabhai Space Centre, where launch vehicles are developed, and of the Liquid Propulsion Systems Centre at Valiamala. Option C, Ahmedabad, is the home of the Space Applications Centre and of the Physical Research Laboratory founded by Vikram Sarabhai. Option D, Sriharikota in Andhra Pradesh, is the Satish Dhawan Space Centre, the launch site, and Gaganyaan will lift off from there even though the programme is directed from Bengaluru.