Comprehension
When we hear the name SPACE, only one organization comes to mind: the Indian Space Research Organization (ISRO). The Indian Space Research Organization (ISRO), located in Bengaluru, is the country’s first space agency. ISRO was founded in 1969 with the goal of developing and utilizing space technology for national development while also conducting planetary exploration and space science research. The space research operations began in India in the early 1960s, at a time when satellite applications were still in the experimental stages in the United States. Dr. Vikram Sarabhai, the founding father of India’s space programme, rapidly recognized the benefits of space technologies after the live transmission of the Tokyo Olympic Games across the Pacific by the American satellite ‘Syncom-3’ demonstrated the power of communication satellites. The ISRO has launched various spacecrafts like the Chandrayaan, Astrosat, Microsat, GSAT etc. The Government of India has also approved a regional spaceborne navigation system, which will consist of seven satellites. Out of these, four of them will be placed in geosynchronous inclined orbit of 29° relative to the equatorial plane. Such an arrangement would mean all seven satellites would have continuous radio visibility with Indian control stations.
Question: 1

Name the first dedicated mission launched by ISRO for studying the celestial sources in X-ray, optical and UV spectral bands simultaneously.

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ISRO’s astronomy missions: - Astrosat → multi-wavelength space observatory - Chandrayaan → lunar exploration - Gaganyaan → human spaceflight
Updated On: Jul 3, 2026
  • Amazonia
  • Astrosat
  • Gaganyaan–1
  • Lunar Polar Exploration Mission
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The Correct Option is B

Solution and Explanation

Astrosat, launched by ISRO in 2015 aboard a PSLV rocket, is India's first dedicated astronomy satellite. It carries multiple instruments that let scientists study the same celestial object across X-ray, ultraviolet, and visible light bands simultaneously, which was not possible with earlier single-band satellites. The correct answer is Astrosat.
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Question: 2

APPLE, the first communication satellite of ISRO, was launched from:

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APPLE = ISRO’s 1st communication satellite → launched on Ariane → from Kourou.
Updated On: Jul 3, 2026
  • Satish Dhawan Space Centre, Sriharikota
  • TERLS, Thiruvananthapuram
  • Kourou, French Guiana
  • SSLV Launching Station, Tamil Nadu
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The Correct Option is C

Solution and Explanation

APPLE (Ariane Passenger Payload Experiment) was ISRO's first experimental communication satellite, launched in 1981 on an Ariane rocket from the European spaceport at Kourou, French Guiana, since India's own launch vehicles were not yet capable of such a mission. The correct answer is Kourou, French Guiana.
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Question: 3

Name the spacecraft that has been successfully sent into space to probe the planets in the solar system.

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Mariner series → planetary probes. Mariner 10 → Venus + Mercury.
Updated On: Jul 3, 2026
  • Sputnik 19
  • Cosmos 482
  • Pioneer-E
  • Mariner 10
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The Correct Option is D

Solution and Explanation

Mariner 10 was NASA's spacecraft that successfully explored other planets by using Venus's gravity to swing toward Mercury, becoming the first probe to visit Mercury. The correct answer is Mariner 10.
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Question: 4

The first successful nuclear bomb test conducted by India in 1974 is called the:

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1974 → Smiling Buddha 1998 → Pokhran-II (Operation Shakti)
Updated On: Jul 3, 2026
  • Prithvi
  • Pokhran-II
  • Smiling Buddha
  • Surya
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The Correct Option is C

Solution and Explanation

India carried out its first nuclear explosion test at Pokhran on 18 May 1974, under the code name Smiling Buddha, making it the first country outside the five recognised nuclear powers to conduct such a test. The correct answer is Smiling Buddha.
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Question: 5

NaviC covers India and a region extending:

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NavIC coverage radius → 1,500 km beyond India’s borders.
Updated On: Jul 3, 2026
  • 1,500 km
  • 2,000 km
  • 7,000 km
  • 1,000 km
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The Correct Option is A

Solution and Explanation

NavIC (Navigation with Indian Constellation) is ISRO's regional satellite navigation system, and its primary service area is defined as India plus a zone extending about 1,500 km beyond the country's borders. The correct answer is 1,500 km.
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