The Physical Research Laboratory (PRL) is a national Research Institute for space and allied sciences, supported mainly by Department of Space, Government of India. This research laboratory has ongoing research programmes in Astronomy and Astrophysics, Atmospheric Sciences and Aeronomy, Earth Sciences, Solar System studies and Theoretical Physics. It manages the Udaipur Solar Observatory and is located in Ahmedabad.

Correct Option: A

The Physical Research Laboratory (PRL) is a national Research Institute for space and allied sciences, supported mainly by Department of Space, Government of India. This research laboratory has ongoing research programmes in Astronomy and Astrophysics, Atmospheric Sciences and Aeronomy, Earth Sciences, Solar System studies and Theoretical Physics. It manages the Udaipur Solar Observatory and is located in Ahmedabad.

Wernher Magnus Maximilian, Freiherr von Braun was a German-American rocket scientist, aerospace engineer, space architect, and one of the leading figures in the development of rocket technology in Nazi Germany during World War II and, subsequently, in the United States. In his 20s and early 30s, von Braun was the central figure in Germany’s rocket development program, responsible for the design and realization of the V-2 combat rocket during World War II. After the war, he and some select members of his rocket team were taken to the United States as part of the then-secret Operation Paperclip. Von Braun worked on the United States Army intermediate range ballistic missile (IRBM) program before his group was assimilated by NASA. Under NASA, he served as director of the newly formed Marshall Space Flight Center and as the chief architect of the Saturn V launch vehicle, the super-booster that propelled the Apollo spacecraft to the Moon.

Correct Option: A

Wernher Magnus Maximilian, Freiherr von Braun was a German-American rocket scientist, aerospace engineer, space architect, and one of the leading figures in the development of rocket technology in Nazi Germany during World War II and, subsequently, in the United States. In his 20s and early 30s, von Braun was the central figure in Germany’s rocket development program, responsible for the design and realization of the V-2 combat rocket during World War II. After the war, he and some select members of his rocket team were taken to the United States as part of the then-secret Operation Paperclip. Von Braun worked on the United States Army intermediate range ballistic missile (IRBM) program before his group was assimilated by NASA. Under NASA, he served as director of the newly formed Marshall Space Flight Center and as the chief architect of the Saturn V launch vehicle, the super-booster that propelled the Apollo spacecraft to the Moon.

A geosynchronous satellite is a satellite in geosynchronous orbit, with an orbital period the same as the Earth’s rotation period. Such a satellite returns to the same position in the sky after each sidereal day, and over the course of a day traces out a path in the sky that is typically some form of analemma. Geosynchronous satellites have the advantage of remaining permanently in the same area of the sky, as viewed from a particular location on Earth, and so permanently within view of a given ground station. Geostationary satellites have the special property of remaining permanently fixed in exactly the same position in the sky, meaning that ground-based antennas do not need to track them but can remain fixed in one direction.

Correct Option: B

A geosynchronous satellite is a satellite in geosynchronous orbit, with an orbital period the same as the Earth’s rotation period. Such a satellite returns to the same position in the sky after each sidereal day, and over the course of a day traces out a path in the sky that is typically some form of analemma. Geosynchronous satellites have the advantage of remaining permanently in the same area of the sky, as viewed from a particular location on Earth, and so permanently within view of a given ground station. Geostationary satellites have the special property of remaining permanently fixed in exactly the same position in the sky, meaning that ground-based antennas do not need to track them but can remain fixed in one direction.

Chandrayaan-1 was India’s first unmanned lunar probe. It was launched by the Indian Space Research Organisation in October 2008, and operated until August 2009. The mission included a lunar orbiter and an impactor. India launched the spacecraft with a modified version of the PSLV, PSLV C11 on 22 October, 2008 from Satish Dhawan Space Centre, Sriharikota, Nellore District, Andhra Pradesh. Note : Chandrayaan-2 is India’s second lunar exploration mission after Chandrayaan-1. Developed by the Indian Space Research Organization, the mission is planned to be launched to the Moon by a Geosynchronous Satellite Launch Vehicle. The ISRO is planning to launch Chandrayaan-2 in the first quarter of 2018.

Correct Option: C

Chandrayaan-1 was India’s first unmanned lunar probe. It was launched by the Indian Space Research Organisation in October 2008, and operated until August 2009. The mission included a lunar orbiter and an impactor. India launched the spacecraft with a modified version of the PSLV, PSLV C11 on 22 October, 2008 from Satish Dhawan Space Centre, Sriharikota, Nellore District, Andhra Pradesh. Note : Chandrayaan-2 is India’s second lunar exploration mission after Chandrayaan-1. Developed by the Indian Space Research Organization, the mission is planned to be launched to the Moon by a Geosynchronous Satellite Launch Vehicle. The ISRO is planning to launch Chandrayaan-2 in the first quarter of 2018.

Dundigal Air Force Academy (ICAO: VODG) is located at Hyderabad, in the state of Andhra Pradesh, India. The Air Force Academy was established in 1969 and started in 1971. It is located at Dundigal, about 25 km away from the twin cities of Hyderabad and Secunderabad, spread over 7,000 acres of land. The academy was set up to train cadets from all streams at one location. It imparts training to the Flying, Technical and Ground Duty Branches as well as officers of the Army and Navy. This is a home for the officer trainees who learn their specialisation and are nurtured to become capable leaders. After one year’s training, officer cadets are commissioned into branches of the IAF. It is here that they are trained to learn flying through successive stages.

Correct Option: A

Dundigal Air Force Academy (ICAO: VODG) is located at Hyderabad, in the state of Andhra Pradesh, India. The Air Force Academy was established in 1969 and started in 1971. It is located at Dundigal, about 25 km away from the twin cities of Hyderabad and Secunderabad, spread over 7,000 acres of land. The academy was set up to train cadets from all streams at one location. It imparts training to the Flying, Technical and Ground Duty Branches as well as officers of the Army and Navy. This is a home for the officer trainees who learn their specialisation and are nurtured to become capable leaders. After one year’s training, officer cadets are commissioned into branches of the IAF. It is here that they are trained to learn flying through successive stages.