✅ Answer: A) 1, 2 and 3All three statements are correct. Chandrayaan-3 successfully landed on the Moon’s south pole on August 23, 2023. India became the first country to land near the Moon’s south pole (though the 4th country overall to soft-land on the Moon). The landing site was named “Shiv Shakti Point” by PM Narendra Modi. The Pragyan rover confirmed sulphur on the south pole. August 23 is now celebrated as National Space Day.

✅ Answer: C) 104PSLV-C37 set a world record on February 15, 2017 by launching 104 satellites in a single mission. Of these, 101 were from foreign countries (mainly USA). This broke the previous record of 37 satellites set by Russia. The primary payload was Cartosat-2D. This demonstrated ISRO’s capability for commercial satellite launches. ISRO’s commercial arm, NewSpace India Limited (NSIL), handles commercial launches.

✅ Answer: C) 400 kmThe Gaganyaan mission aims to send 3 Indian astronauts to a 400 km Low Earth Orbit (LEO) for 3 days. The mission will use the LVM3 (GSLV Mk III) launch vehicle. The International Space Station (ISS) also orbits at about 400 km. India will become the 4th country to independently send humans to space (after USA, Russia, China). The mission is expected to be completed by 2025.

✅ Answer: B) Rohini (RS-1)Rohini (RS-1) was India’s first indigenously launched satellite, launched by SLV-3 (India’s first launch vehicle) on July 18, 1980. Aryabhata (1975) was India’s first satellite but was launched by the Soviet Union. SLV-3 was developed under the leadership of Dr. A.P.J. Abdul Kalam. The successful launch of Rohini made India the 7th country to have indigenous satellite launch capability.

✅ Answer: C) Cryogenic engineGSLV uses a cryogenic engine in its upper stage. A cryogenic engine uses liquid hydrogen (LH2) as fuel and liquid oxygen (LOX) as oxidiser — both stored at extremely low temperatures. India developed its own cryogenic engine (CE-7.5) after the USA refused to transfer the technology. Mastering cryogenic technology was a major achievement for ISRO. GSLV is used to launch heavier communication satellites into geostationary orbit.

✅ Answer: B) Communication, meteorology, and broadcastingThe INSAT (Indian National Satellite System) series is used for communication, meteorology (weather forecasting), and broadcasting (TV, radio). INSAT-1B (1983) was the first operational INSAT satellite. The INSAT system is one of the largest domestic communication satellite systems in the Asia-Pacific region. IRS (Indian Remote Sensing) satellites are used for remote sensing and mapping. IRNSS/NAVIC is used for navigation.

✅ Answer: B) Sriharikota (SDSC)Mangalyaan was launched from the Satish Dhawan Space Centre (SDSC) at Sriharikota, Andhra Pradesh on November 5, 2013 using PSLV-C25. It reached Mars orbit on September 24, 2014. The mission cost ~₹450 crore — cheaper than the Hollywood movie “Gravity” (~₹700 crore). India became the first Asian country to reach Mars and the first country to succeed in its maiden attempt.

✅ Answer: C) ISTRAC (Bengaluru)ISTRAC (ISRO Telemetry, Tracking and Command Network) in Bengaluru is responsible for tracking and controlling ISRO’s satellites and spacecraft. VSSC (Vikram Sarabhai Space Centre) in Thiruvananthapuram develops launch vehicles. SAC (Space Applications Centre) in Ahmedabad develops satellite payloads. NRSC (National Remote Sensing Centre) in Hyderabad processes remote sensing data. ISRO’s headquarters is also in Bengaluru.

✅ Answer: A) Rakesh Sharma (1984)Rakesh Sharma was the first Indian to go to space on April 3, 1984, aboard the Soviet Soyuz T-11 spacecraft. When PM Indira Gandhi asked him how India looked from space, he replied “Saare Jahan Se Achha.” He was an Indian Air Force pilot. Kalpana Chawla (1997) and Sunita Williams (2006) were Indian-American NASA astronauts. Ravish Malhotra was the backup cosmonaut for Rakesh Sharma’s mission.

✅ Answer: B) OneWebISRO’s LVM3 (GSLV Mk III) was used to launch OneWeb satellites in 2022 and 2023. OneWeb is a UK-based satellite internet company. This was a major commercial achievement for ISRO, demonstrating LVM3’s capability for heavy commercial payloads. ISRO’s commercial arm, NewSpace India Limited (NSIL), handled the contract. LVM3 can carry payloads up to 10 tonnes to Low Earth Orbit (LEO).