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Type: Prelims Only

  • Water Management – Institutional Reforms, Conservation Efforts, etc.

    Kholongchhu Hydel Project

    Prelims Only | Economics | Mains Paper 3: Infrastructure: Energy, Ports, Roads, Airports, Railways Etc.

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Kholongchhu Hydel Project

    Mains level: Not Much

    India and Bhutan took a major step forward for the construction of the 600 MW Kholongchhu project.

    Try this question from CSP 2019:

    What is common to the places known as Aliyar, Isapur and Kangsabati?

    (a) Recently discovered uranium deposits

    (b) Tropical rain forests

    (c) Underground cave systems

    (d) Water reservoirs

    Kholongchhu Hydel Project

    • The Kholongchhu project is regarded as a “milestone” in the India-Bhutan partnership, under which four hydropower projects have been built in the last 30 years totalling a capacity of 2,100 MW.
    • It is one of four additional projects agreed to in 2008, as a part of India’s commitment to helping Bhutan create a total 10,000 MW of installed capacity by 2020.
    • The project is located at the lower course of Kholongchhu just before its confluence with Drangmechu (Gongrichu) in Trashiyangtse District of Bhutan.
    • The GoI will provide, as a grant, the equity share of the Bhutanese DGPC in the JV Company.
    • Once the project is commissioned, the JV partners will run it for 30 years, called the concession period, after which the full ownership will transfer to the Bhutan government.

    Whats’ so special with the project?

    • It is the first hydropower joint venture project in Bhutan’s less developed eastern region of Trashiyangtse.
    • It is the first time an India-Bhutan hydropower project will be constructed as a 50:50 joint venture and not as a government-to-government agreement.

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  • Innovations in Biotechnology and Medical Sciences

    What is Gynandromorphism?

    Prelims Only | Science Tech | Mains Paper 3: Awareness in various sc and tech fields

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Gynandromorphism

    Mains level: NA

    Recently, a rare biological phenomenon called Gynandromorphism was observed in dragonflies at Kole wetlands of Kerala.

    Gynandromorphism is a core biology concept. We can expect a prelims question in a rare scenario.

    Try this question from CSP 2013:

    Q.Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins which are not generally destroyed by normal cooking process. Aflatoxins are produced by

    (a) Bacteria (b) Protozoa (c) Moulds (d) Viruses

    Gynandromorphism

    • Gynandromorphs are individual animals that have both genetically male and female tissues and often have observable male and female characteristics.
    • They may be bilateral, appearing to divide down the middle into male and female sides, or they may be mosaic, with patches characteristic of one sex appearing in a body part characteristic of the other sex.
    • Gynandromorphs occur in insects, spiders, crustaceans, and other arthropods as well as in birds, but they are extremely rare, and discovering one in the field or in the laboratory is a major event.
    • Estimating how frequently they occur is difficult because they usually go unnoticed in species where sexual dimorphism is less pronounced.
    • Gynandromorphs have been reported in mosquitoes, fruit flies, and in other insects, but they are most dramatic in those butterfly species in which the male and female wing colours and patterns are dramatically different.

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  • Wildlife Conservation Efforts

    Species in news: Jungle Fowl

    Prelims Only | Enviro & Biodiversity | Mains Paper 3: Conservation, Environmental Pollution & Degradation, Eia

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Jungle Fowl

    Mains level: NA

    A recent study by scientists has revealed new details about the earliest domestication of chicken from the Jungle Fowl.

    Try this question from CSP 2012:

    Q.What is the difference between the antelopes’ Oryx and Chiru?

    (a) Oryx is adapted to live in hot and arid areas like Africa and Arabia whereas Chiru is adapted to live in steppes and semi-desert areas of cold high mountains of Tibetan Plateau.

    (b) Oryx is poached for its antlers whereas Chiru is poached for its musk

    (c) Oryx exists in western India only whereas Chiru exists in northeast India only.

    (d) None of the statements (a), (b) and (c) given above is correct.

    Jungle Fowl

    • The DNA sequencing of 863 genomes has shown the first domestication of chicken occurred in southwestern China, northern Thailand and Myanmar.
    • The study involved sequencing of genomes from all four species of the genus Gallus, five subspecies of Red Jungle Fowl and various domestic chicken breeds collected worldwide.
    • It revealed single domestication from Red Jungle Fowl sub-species Gallus spadiceous.
    • The study also demonstrated that all five Red Jungle Fowl sub-species were genetically differentiated from each other approximately 50,000 years ago much earlier than domestication.
    • The results contradicted the earlier claim that chickens were domesticated in northern China and the Indus Valley.

    Domestication of Chicken

    • The question of domestication of chickens has intrigued scientists for centuries and has been the subject of debate.
    • Charles Darwin postulated that chickens were domesticated around 4,000 B.C. from a single ancestor, Red Jungle Fowl in the Indus Valley.
    • An important study published earlier from Uppsala University claimed the Grey Jungle Fowl had contributed to chicken domestication.
    • With this, a couple of studies from India, China and other South-Asian countries have argued the monophyletic origin of chicken.

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  • Modern Indian History-Events and Personalities

    Statistics Day and P.C. Mahalanobis

    Prelims Only | Science Tech | Mains Paper 3: Awareness in various sc and tech fields

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: PC Mahalanobis

    Mains level: NA

    Statistics Day will be celebrated today on 29th June 2020 to popularize the use of Statistics in everyday life and sensitize the public as to how Statistics helps in shaping and framing policies.

    Try this question from CSP 2016:

    A recent movie titled The Man Who Knew Infinity is based on the biography of-

    (a) S. Ramanujan
    (b) S. Chandrasekhar
    (c) S. N. Bose
    (d) C. V. Raman

    Who was P.C. Mahalanobis?

    • Prasanta Chandra Mahalanobis (29 June 1893 – 28 June 1972) was an Indian scientist and statistician.
    • He is best remembered for the Mahalanobis distance, a statistical measure, and for being one of the members of the first Planning Commission of free India.
    • He made pioneering studies in anthropometry (the science of obtaining systematic measurements of the human body) in India.
    • He founded the Indian Statistical Institute and contributed to the design of large-scale sample surveys.
    • For his contributions, Mahalanobis has been considered the father of modern statistics in India.

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  • National Green Tribunal’s Role and Contributions

    In news: Athirappally Waterfalls

    Prelims Only | Enviro & Biodiversity | Mains Paper 3: Conservation, Environmental Pollution & Degradation, Eia

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Various waterfalls mentioned in the newscard

    Mains level: NA

    The Kerala government recently gave the go-ahead for the proposed 163-megawatt (MW) Athirappally Hydroelectric Project.

    Information about some of India’s tallest waterfalls is provided in the B2b section. Kindly pen them down along with their respective states. They can be asked in the match the pair type question.

    Athirappally Waterfalls

    • The famous Athirappally Waterfalls is located on the Chalakudy River in Thrissur district of Kerala.
    • It originates from the upper reaches of the Western Ghats at the entrance to the Sholayar ranges.
    • It is the largest waterfall in Kerala, which stands tall at 80 feet and is nicknamed “The Niagara of India”.
    • Controversy about a state-proposed hydroelectric dam on the Chalakudy River above the waterfalls began in the 1990s and continued through 2021.

    Issues with the Hydel project

    • A number of families belonging to the Kadar tribal group are facing displacement here.
    • The dam will also affect irrigation and tourism possibilities in the downstream parts of the Chalakudy River.
    • The falls and its surroundings are part of a crucial biodiversity-rich region coming under the Ecologically Sensitive Zone 1 of the Western Ghats.
    • The Ghats themselves are a UNESCO World Heritage Site and are one of the eight “hottest hot-spots” of biological diversity in the world.

    Back2Basics: Waterfalls in India

    • Vajrai Falls (560m): Satara, Maharashtra
    • Kunchikal Falls (455m): Shimoga, Karnataka
    • Barehipani Falls (390m): Odisha
    • Nohkalikai Falls (340m): East Khasi, Meghalaya
    • Dudhsagar Falls (310m): Karnataka, Goa

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  • Modern Indian History-Events and Personalities

    100 Years of Malabar Rebellion

    Prelims Only | | Mains Paper 1: Modern Indian History

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Malabar Rebellion 1921

    Mains level: Peasants revolts in the colonial period

    With the 1921 Malabar Rebellion turning 100 next year, several movies have been announced back-to-back.

    Try this question from CSP 2015:

    Q. Which amongst the following provided a common factor for tribal insurrection in India in the 19th century?

    (a.) Introduction of a new system of land revenue and taxation- of tribal products

    (b.) Influence of foreign religious missionaries in tribal areas

    (c.) Rise of a large number of money lenders, traders and revenue farmers as middlemen in tribal areas

    (d.) The complete disruption of the old agrarian order of the tribal communities

    What is the Malabar Rebellion?

    • The Malabar Rebellion in 1921 started as resistance against the British colonial rule and the feudal system in southern Malabar but ended in communal violence between Hindus and Muslims.
    • There were a series of clashes between Mappila peasantry and their landlords, supported by the British, throughout the 19th and early 20th centuries.
    • It began as a reaction against a heavy-handed crackdown on the Khilafat Movement, a campaign in defence of the Ottoman Caliphate by the British authorities in the Eranad and Valluvanad taluks of Malabar.
    • The Mappilas attacked and took control of police stations, British government offices, courts and government treasuries.

    Also in news:

    Variyankunna Kunjahammed Haji

    • He was one of the leaders of the Malabar Rebellion of 1921.
    • He raised 75000 natives, seized control of large territory from the British rule and set up a parallel government.
    • In January 1922, under the guise of a treaty, the British betrayed Haji through his close friend Unyan Musaliyar, arresting him from his hideout and producing him before a British judge.
    • He was sentenced to death along with his compatriots.

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  • Contention over South China Sea

    In news: Senkaku Islands

    Prelims Only | International Relations | Mains Paper 2: India & Its Neighborhood – Relations

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Senkaku Islands

    Mains level: China's territorial expansion plans

    A local council in southern Japan voted to rename an area covering the Tokyo-controlled Senkaku Islands — known by Taiwan and China as the Diaoyus — from “Tonoshiro” to “Tonoshiro Senkaku”.

    Try this:

    Q. Recently, Senkaku Island was in the news. Where is it located?

    a) South China Sea

    b) Indian Ocean

    c) East China sea

    d) Red sea

    Senkaku Island Dispute

    • The Japanese-administered island chain, formed by five islets and three barren rocks, covers an area of 7 square km.
    • It is located about 200km southwest of Japan’s Okinawa Island and a similar distance northeast of Taiwan.
    • Japan annexed the archipelago following China’s defeat in the first Sino-Japanese war from 1894 to 1895.
    • Yet the islands were left out of the Treaty of San Francisco at the end of the second world war that returned to China most of the territories previously occupied by Japan.
    • Under the terms of Japan’s surrender, the island chain was controlled by the US until 1971, when it was returned to Japan along with Okinawa and other surrounding islands.

    Why are the Islands so coveted?

    • The region appears to have great promise as a future oil province of the world.
    • Japan and China are among the world’s top importers of fossil fuels.
    • Abundant fishing resources are found nearby, as can important shipping lanes used by Japan, South Korea and China for energy imports.
    • The islands have also become a focal point of the broader rivalry between the two countries.

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  • Modern Indian History-Events and Personalities

    Sukapha: The founder of Ahom kingdom

    Prelims OnlyStates | History | Mains Paper 1: Arts & Culture

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Ahom Kingdom

    Mains level: Not Much

    Recently, Assam CM ordered the arrest of a political commentator who had described Chaolung Sukapha as a “Chinese invader”.

    Practice question for mains:

    Q. Who are the Ahoms? Describe the role of Ahom Kingdom in cultural assimilation of modern-day Assam.

    Who was Chaolung Sukapha?

    • Sukapha was a 13th-century ruler who founded the Ahom kingdom that ruled Assam for six centuries. Contemporary scholars trace his roots to Burma.
    • He reached Brahmaputra valley in Assam from upper Burma in the 13th century with around 9,000 followers.
    • Sukapha is said to have left a place called Maulung ( in Yunnan, China ) in AD 1215 with eight nobles and 9,000 men, women and children — mostly men.
    • In 1235, Sukapha and his people settled in Charaideo in upper Assam after wandering about for years, defeating those who protested his advance and temporarily staying at different locations.
    • It was in Charaideo (in Assam) that Sukapha established his first small principality, sowing the seeds of further expansion of the Ahom kingdom.

    Who are the Ahoms today?

    • The founders of the Ahom kingdom had their own language and followed their own religion.
    • Over the centuries, the Ahoms accepted the Hindu religion and the Assamese language, scholars say.
    • The Ahoms embraced the language, religion and rituals of the communities living here — they did not impose theirs on those living here.
    • Today, the Ahom community is estimated to number between 4 million and 5 million.

    Why is Sukapha important in Assamese culture?

    • Sukapha’s significance — especially in today’s Assam — lies in his successful efforts towards the assimilation of different communities and tribes.
    • He developed very amicable relationships with the tribal communities living here — especially the Sutias, the Morans and the Kacharis.
    • Intermarriage also increased assimilation processes. He is widely referred to as the architect of “Bor Asom” or “greater Assam”.

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  • Global Geological And Climatic Events

    ‘Ring of Fire’ Solar Eclipse

    Prelims Only | Enviro & Biodiversity | Mains Paper 1: Geographical Features & Their Location

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Solar Eclipse and related terms, Summer Solstice

    Mains level: Not Much

    A rare celestial event, an annular solar eclipse popularly called as the ‘ring of fire’ eclipse, will be visible on June 21, 2020 from some parts of Northern India. The first solar eclipse of this year takes place on the summer solstice, which is the longest day in the Northern Hemisphere.

    Try this question from CSP 2019:

    Q. On 21st June, the Sun

    (a) Does not set below the horizon at the Arctic Circle

    (b) Does not set below the horizon at Antarctic Circle

    (c) Shines vertically overhead at noon on the Equator

    (d) Shines vertically overhead at the Tropic of Capricorn

    What is the Solar Eclipse?

    • A Solar Eclipse happens when the moon while orbiting the Earth comes in between the sun and the Earth, due to which the moon blocks the sun’s light from reaching the Earth, causing an eclipse of the sun or a solar eclipse.
    • According to NASA, people who are able to view the total solar eclipse are in the centre of the moon’s shadow as and when it hits the Earth.
    • There are three types of eclipses: one is a total solar eclipse, which is visible only from a small area on Earth. A total solar eclipse happens when the sun, moon and Earth are in a direct line.
    • The second type of a solar eclipse is a partial solar, in which the shadow of the moon appears on a small part of the sun.

    Annular Solar Eclipse

    • The third kind is an annular solar eclipse, which happens when the moon is farthest from the Earth, which is why it seems smaller.
    • In this type of an eclipse, the moon does not block the sun completely, but looks like a “dark disk on top of a larger sun-coloured disk” forming a “ring of fire”.
    • Furthermore, during a solar eclipse, the moon casts two shadows on the Earth; the first one is called the umbra, which gets smaller as it reaches the Earth.
    • The second one is called the penumbra, which gets larger as it reaches the Earth.
    • According to NASA, people standing in the umbra see a total eclipse and those standing in the penumbra see a partial eclipse.

    Why the study of solar eclipse is crucial?

    • One of the reasons that NASA studies solar eclipses is to study the top layer of the sun called the corona.
    • During an annular eclipse, NASA uses ground and space instruments to view this top layer when the sun’s glare is blocked by the moon.

    Back2Basics: Summer Solstice

    • The summer solstice occurs when one of the Earth’s poles has its maximum tilt toward the Sun.
    • It happens twice yearly, once in each hemisphere (Northern and Southern).
    • For that hemisphere, the summer solstice is when the Sun reaches its highest position in the sky and is the day with the longest period of daylight.
    • Within the Arctic circle (for the northern hemisphere) or Antarctic circle (for the southern hemisphere), there is continuous daylight around the summer solstice.
    • On the summer solstice, Earth’s maximum axial tilt toward the Sun is 23.44°. Likewise, the Sun’s declination from the celestial equator is 23.44°.

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  • Historical and Archaeological Findings in News

    Kodumanal Megalithic Burial Site

    Prelims Only | History | Mains Paper 1: Arts & Culture

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Megaliths

    Mains level: Not Much

    The Kodumanal excavation in Erode Dist. of Tamil Nadu has threw light on burial rituals and the concept of afterlife in megalithic culture.

    Must read:

    Chapter 1 | Stone Age – Paleolithic, Mesolithic and Neolithic

    About these sites

    • The researchers have identified 250 cairn-circles at the village in Erode district.
    • Earlier excavations revealed that the site served as a trade-cum-industrial centre from 5th century BCE to 1st century BCE.
    • The rectangular chambered cists, each two metres long and six metres wide, are made of stone slabs, and the entire grave is surrounded by boulders that form a circle.
    • The grave could be of a village head or the head of the community as the size of two boulders, each facing east and west, are bigger than other boulders.
    • Believing that the deceased person will get a new life after death, pots and bowls filled with grains were placed outside the chambers.

    What are Megaliths?

    • Megaliths are the earliest surviving man-made monuments we know of—derived from the Latin mega (large) and lith (stone).
    • Megaliths were constructed either as burial sites or commemorative (non-sepulchral) memorials.
    • The former are sites with actual burial remains, such as dolmenoid cists (box-shaped stone burial chambers), cairn circles (stone circles with defined peripheries) and capstones (distinctive mushroom-shaped burial chambers found mainly in Kerala).
    • The urn or the sarcophagus containing the mortal remains was usually made of terracotta.
    • Non-sepulchral megaliths include memorial sites such as menhirs. (The line separating the two is a bit blurry, since remains have been discovered underneath otherwise non-sepulchral sites, and vice versa.)
    • In India, archaeologists trace the majority of the megaliths to the Iron Age (1500 BC to 500 BC), though some sites precede the Iron Age, extending up to 2000 BC.

    Megaliths in India

    • Megaliths are spread across the Indian subcontinent, though the bulk of them are found in peninsular India, concentrated in the states of Maharashtra (mainly in Vidarbha), Karnataka, Tamil Nadu, Kerala, Andhra Pradesh and Telangana.
    • According to archaeologists around 2,200 megalithic sites can be found in peninsular India itself, most of them unexcavated.
    • Even today, a living megalithic culture endures among some tribes such as the Gonds of central India and the Khasis of Meghalaya.

    Literary sources

    • Megalithic culture finds several references in ancient Tamil Sangam literature. For instance, menhirs are referred to as nadukal.
    • Ancient Sangam texts lay out, in detail, a step-by-step procedure for laying a memorial stone or nadukal in honour of a fallen hero.
    • Manimekalai (5th century AD), the famous Sangam epic, refers to the various kinds of burials namely cremation (cuṭuvōr), post excarnation burial (iṭuvōr), burying the deceased in a pit (toṭukuḻip paṭuvōr), rock chamber or cist burial (tāḻvāyiṉ aṭaippōr), urn burial encapped with lid (tāḻiyiṟ kavippōr).
    • Even in the Sangam age (when kingship and a well-ordained society had emerged) the above modes of burials survived.

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