Daily Prelims Newsletter For UPSC
| RaghukulCS

11 March 2021

Whale sharks are the largest shark, and also the largest of any fishes alive today.
They travel large distances looking for food to sustain their huge size, and also to reproduce.
The whale sharks are called ‘filter feeder shark’ since they do not eat meat like any other sharks but filter sea water and feed on tiny planktons.
They could be as large as 20m.
Habitat: Found in all the tropical oceans of the world.
Common Threats:
- Oil & gas drilling,
- Oil Spills
- Shipping lanes etc.
Protection Status:
IUCN Red List
Endangered
CITES
Appendix II
WPA, 1972
Schedule I

Quasars are very luminous objects in faraway galaxies that emit light at radio frequencies.
Apart from radio waves and visible light, quasars also emit UV rays, infrared waves, X-rays, and gamma-rays.
Most quasars are larger in size than our solar system.

Black hole refer to point in space where matter is so compressed and create a gravity field from which even light cannot escape.
Quasars are formed by the energy emitted by materials swirling around a blackhole right before being sucked into it.

The conventional type of submarine use diesel-electric engines, requiring them to surface almost every day to get atmospheric oxygen for combustion of fuel.
About Fuel Cell Based AIP:When equipped withAir Independent Propulsion system, this submarine will need to surface only once a week to take in oxygen.

The AIP, is one of the key missions of the Naval Materials Research Laboratory (NMRL), DRDO.
The AIP equipped submarines will surface much less frequently, therebyincreasing their lethality and stealth
The fuel cell-based AIP of NMRL is unique as hydrogen is generated onboard.

In a fuel cell based AIP, an electrolytic fuel cell releases energy by combining hydrogen and oxygen, with only water as the by-product.
These cells are highly efficient, and also do not have moving parts, thereby ensuring low acoustic emissions of sound from submarine.

The Uighurs are predominantly Muslim minority Turkish ethnic group, of Central and East Asian origin.
Their language is similar to Turkish, and hence they find themselves culturally and ethnically close to Central Asian
Currently, the largest population of the Uighur ethnic community lives in Xinjiang province of China.
Uighurs also live in the neighbouring Central Asian countries like Uzbekistan, Kyrgyzstan and Kazakhstan.

· Recently, The foundation stone was laid down for development of Maa Bamleshwari Devi Temple, Dongargarh, Chhattisgarh under PRASHAD Scheme
It is a Central Sector Scheme
It is under Ministry of Tourism in 2014-15
It aims for Integrated development of identified pilgrimage and heritage destinations.
· Also, Infrastructure development like entry points, last mile connectivity, Money exchange facilities, first aid centres nearby, etc

· Recently, the conservation works of Singorgarh Fort was inaugrated by the President of India.
· Location: Madhya Pradesh.
· It is a hill-fort of Gondwana Kingdom.
·Gond ruler Sasngram Shah had conquered the Singorgarh fort from Chandel rulers in early 16th century.