Archive · 16 Sep 2026
Science Quiz Covers Moon Basins, Space Weapons and Quantum Concepts
This article is a science and technology quiz for UPSC exam preparation.
One question discusses large craters on the Moon caused by asteroid or meteorite impacts.
Scientists used Chandrayaan-1 data to identify the Australe Basin in the Moon’s southeastern hemisphere.
Another question covers Yudh Abhyas, a military exercise between India and the United States.
The exercise trains soldiers to work together in difficult mountainous and semi-mountainous areas.
The quiz also explains that space weapons can target satellites, ground targets or communication systems.
Quantum entanglement means that two tiny particles can remain connected even when far apart.
Finally, carrageenan is a seaweed-based thickener used in several processed foods.
Scientists identified the Australe Basin in the Moon’s southeastern hemisphere using Chandrayaan-1 mineralogical data.
The 22nd Yudh Abhyas exercise is being held in Uttarakhand and Rajasthan, focusing on Integrated Battle Groups and difficult terrain.
The quiz explains that weaponisation of space includes attacks on satellites, ground targets, communications and cyber-networks.
Quantum entanglement links the states of particles so that measuring one provides information about the other, regardless of distance.
Carrageenan is a thickening agent derived from red seaweed and used in products such as ice cream, flavoured milk and paneer substitutes.
- Who
- UPSC Essentials, an Indian Express initiative, presents the quiz; the explanations also refer to researchers, military forces and food-safety authorities.
- What
- A five-question Science and Technology quiz covering lunar impact basins, Yudh Abhyas, space weaponisation, quantum entanglement and carrageenan.
- When
- The quiz is identified as Week 180; the article does not provide a specific publication date.
- Where
- The quiz is published online through the Indian Express UPSC Essentials initiative, while the subjects discussed include the Moon, India, the United States and research institutions in India.
- Why
- It is intended to help UPSC candidates revise important topics from the static syllabus and test their understanding.
- Quiz focus
- Science and Technology
- Lunar discovery
- The Australe Basin was identified using mineralogical data from Chandrayaan-1.
- Impact basins
- The article says approximately 300 may exist on the Moon, while 74 have been detected so far.
- Yudh Abhyas
- The 22nd edition is being held at Auli in Uttarakhand and the Mahajan Field Firing Range in Bikaner, Rajasthan.
- Space weaponisation
- The article includes missile attacks on satellites, space-based attacks on ground targets, and disruption of communications or cyber-networks.
- Quantum entanglement
- Entangled particles behave as one linked system, with measurements of one revealing information about the other.
- Carrageenan
- A thickening agent derived from red seaweed and used in ice cream, flavoured milk and paneer substitutes.