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Type: Prelims Only

  • Innovations in Biotechnology and Medical Sciences

    Serotonin Hormone causes Locust to form Swarms

    Prelims Only | Science Tech | Mains Paper 3: S&T – Applications In Everyday Life

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Serotonin

    Mains level: Locusts invasion and its threats

    Scientists have attempted to answer an important scientific question of how and why locusts collect together by the thousands in order to make a swarm.

    Quite often, Oxytocin hormone is seen in the news for its commercial uses and associated ethical concerns. Kindly go through Oxytocin and issues over its commercial use

    What causes Locusts to form huge swarms?

    • When lone locusts happen to come near each other (looking for food) and happen to touch each other, this tactile stimulation, even just in a little area of the back limbs, causes their behaviour to change.
    • This mechanical stimulation affects a couple of nerves in the animal’s body, their behaviour changes, leading to their coming together.
    • The central nervous system of the locust, the most important among them being serotonin which regulates mood and social behaviour is the mystery behind swarms.
    • Their coming together triggers a mechanical (touch) and neurochemical (serotonin) stimulations to make crowding occur.

    What is Serotonin?

    • It is a monoamine neurotransmitter.
    • It has a popular image as a contributor to feelings of well-being and happiness.
    • Its actual biological function is complex and multifaceted, modulating cognition, reward, learning, memory, and numerous physiological processes such as vomiting and vasoconstriction.

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  • Foreign Policy Watch: India-Australia

    Malabar Naval Exercise to include Australia

    Prelims Only | Security Issues | Mains Paper 3:

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Malabar Naval Exercise

    Mains level: India-Australia bilateral relations

    India is prepared to expand the Malabar trilateral naval exercise involving India, the U.S. and Japan, to permanently include Australia.

    Go through the list for once. UPSC may ask a match the pair type question asking exercise name and countries involved.

    [Prelims Spotlight] Defence Exercises

    About Ex. Malabar

    • Exercise Malabar is a trilateral naval exercise involving the United States, Japan and India as permanent partners.
    • Originally begun in 1992 as a bilateral exercise between India and the United States, Japan became a permanent partner in 2015.
    • Past non-permanent participants are Australia and Singapore.
    • The annual Malabar series began in 1992 and includes diverse activities, ranging from fighter combat operations from aircraft carriers through Maritime Interdiction Operations Exercises.

    Significance of Australia’s inclusion

    • Earlier, India had concerns that it would give the appearance of a “quadrilateral military alliance” aimed at China.
    • Now both look forward to the cooperation in the ‘Indo-Pacific’ and the strengthening of defence ties.
    • This has led to a convergence of mutual interest in many areas for a better understanding of regional and global issues.
    • Both are expected to conclude the long-pending Mutual Logistics Support Agreement (MLSA) as part of measures to elevate the strategic partnership.

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  • Innovations in Sciences, IT, Computers, Robotics and Nanotechnology

    What is Superconductivity?

    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: Superconductivity

    Mains level: Not Much

    On a larger scale, electric grids, such as high power lines, lose over 5 per cent of their energy in the process of transmission.

    In India, we often get to hear about the transmission losses in DISCOMS. Such losses can be zeroed with the application of superconducting cables (which is practically impossible unless we find a normal working one). The phenomena, superconductivity, however is not new to us, UPSC may end up asking some tricky statements in the prelims regarding it.

    Heat losses

    Waste heat is all around you. On a small scale, if your phone or laptop feels warm, that’s because some of the energy powering the device is being transformed into unwanted heat.

    Where does this wasted heat come from?

    • These elementary particles of an atom move around and interact with other electrons and atoms.
    • Because they have an electric charge, as they move through a material — like metals, which can easily conduct electricity — they scatter off other atoms and generate heat.

    Understanding Superconductivity

    • A superconductor is a material, such as a pure metal like aluminium or lead, that when cooled to ultra-low temperatures allows electricity to move through it with absolutely zero resistance.
    • Kamerlingh Onnes was the first scientist who figured out exactly how superconductor works in 1911.
    • Simply put, superconductivity occurs when two electrons bind together at low temperatures.
    • They form the building block of superconductors, the Cooper pair.
    • This holds true even for a potential superconductor like lead when it is above a certain temperature.

    What are Superconductors?

    • Superconductors are materials that address this problem by allowing energy to flow efficiently through them without generating unwanted heat.
    • They have great potential and many cost-effective applications.
    • They operate magnetically levitated trains, generate magnetic fields for MRI machines and recently have been used to build quantum computers, though a fully operating one does not yet exist.

    Issues with superconductors

    • They have an essential problem when it comes to other practical applications: They operate at ultra-low temperatures.
    • There are no room-temperature superconductors. That “room-temperature” part is what scientists have been working on for more than a century.
    • The amount of energy needed to cool a material down to its superconducting state is too expensive for daily applications.

    Future scope

    • In a dramatic turn of events, a new kind of superconductor material was discovered in 1987 at IBM in Zurich, Switzerland.
    • The material was a kind of ceramic. These new ceramic superconductors were made of copper and oxygen mixed with other elements such as lanthanum, barium and bismuth.
    • They contradicted everything physicists thought they knew about making superconductors.
    • Since then, curiosity regarding the superconductors has been ever increasing.

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  • Tribes in News

    Tribes in news: Changpa Tribe

    Prelims OnlySpecies | | Mains Paper 1:

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Pashmina Goats

    Mains level: NA

    The Chinese Army’s intrusion in Chumur and Demchok has left Ladakh’s nomadic herding Changpa community cut off from large parts of summer pastures.

    Pashmina shawl is a landmark product of the Kashmir Valley. But make a note here. It carries only a BIS certification and not a Geographical Indicator.

    Also try this PYQ from CSP 2014:

    Q. With reference to ‘Changpa’ community of India, consider the following statement:

    1. They live mainly in the State of Uttarakhand.
    2. They rear the Pashmina goats that yield fine wool.
    3. They are kept in the category of Scheduled Tribes.
    Which of the statements given above is/are correct?

    a) 1 only
    b) 2 and 3 only
    c) 3 only
    d) 1, 2 and 3

    Changpa Tribes

    • The Changpa of Ladakh is high altitude pastoralists, raising mainly yaks and goats.
    • Among the Ladakh Changpa, those who are still nomadic are known as Phalpa, and they take their herds from in the Hanley Valley to the village of Lato.
    • Hanley is home to six isolated settlements, where the sedentary Changpa, the Fangpa reside.
    • Despite their different lifestyles, both these groups intermarry.
    • The Changpa speak Changskhat, a dialect of Tibetan, and practice Tibetan Buddhism.

    What is the issue?

    • The Chinese Army has taken over 16 kanals (two acres) of cultivable land in Chumur and advanced around 15 km inside Demchok, taking over traditional grazing pastures and cultivable lowlands.
    • In a cascading effect, this has resulted in a sharp rise in deaths of young Pashmina goats this year in the Korzok-Chumur belt of Changthang plateau in Ladakh.
    • This incursion has destabilized the annual seasonal migration of livestocks, including yaks and Pashmina goats.

    Back2Basics: Pashmina

    • The Changthangi or Ladakh Pashmina is a breed of Cashmere goat native to the high plateau of Ladakh.
    • The much-valued wool from the Ladakh herds is essential for the prized Pashmina shawls woven in Kashmir and famous for their intricate handwork.
    • They survive on the grass in Ladakh, where temperatures plunge to as low as −20 °C.
    • These goats provide the wool for Kashmir’s famous pashmina shawls. Shawls made from Pashmina wool are considered very fine and are exported worldwide.
    • Bureau of Indian Standards (BIS) has recently published an Indian Standard for identification, marking and labelling of Pashmina products to certify its purity.

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  • Railway Reforms

    The Deccan Queen Express

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

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Deccan Queen

    Mains level: NA

    The historic Deccan Queen train between Mumbai and Pune completed 90 years on June 1.

    Take the opportunity to revise some of reformative measure in the Indian Railways taken through these years.  Click here to read more .

    The Deccan Queen

    • The Deccan Queen was introduced between Mumbai and Pune on June 1, 1930 by the Great Indian Peninsula Railway (GIPR), the forerunner of the Central Railway.
    • This was the first deluxe train introduced to serve the two important cities of the region, and was named after Pune – also known as the “Queen of Deccan”.
    • It is among the rare Indian trains that have never been hauled using steam traction and were always electric-powered; on rare instances running on diesel.
    • The GIPR in the 1940s would run Race Special trains for Mumbai’s horse racing enthusiasts who would come to Pune on weekends and race days.
    • This train holds many a record, including that of being India’s first superfast train, first long-distance electric-hauled train, first vestibuled train, the first train to have a ‘women-only’ car, and the first train to feature a dining car.

    Back2Basics: Railways in India

    • Indian Railways started its service 164 years ago on 16 April 1853.
    • The first railway proposals for India were made in Madras in 1832.
    • The first train was run over a stretch of 33 kilometres from Mumbai to Thane and was hauled by three steam locomotives named Sahib, Sindh and Sultan.
    • Indian Railway now has the 4th largest rail network in the world after the United States of America, China and Russia.

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  • Terrorism and Challenges Related To It

    What is Antifa Movement?

    Prelims Only | International Relations | Mains Paper 2: Effect Of Policies & Politics Of World On India’S Interests

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Antifa

    Mains level: Racial antagonism across the world

    As massive protests following the death of a person in racial discrimination continued to rock the US, President Donald Trump has announced that the alleged far-left group Antifa would be designated as a terrorist organisation by his government.

    One can expect a similar prelims question:

    Q. The Antifa movement recently seen in news is an: Free trade movement/Anti-terror movement etc.

    Why the US seeks to ban Antifa?

    • Trump has blamed for the protests that have convulsed cities across the US,
    • Antifa is considered the loosely affiliated group of far-left anti-fascist activists.

    Antifa: The group

    • Antifa is an acronym for ‘Anti-Fascist’. It is not an organisation with a leader nor does it have a defined structure or membership roles.
    • Antifa has been around for several decades, though accounts vary on its exact beginnings.
    • The term dates the term as far back as Nazi Germany, describing the etymology of ‘Antifa’ as “borrowed from German Antifa, short for antifaschistische ‘anti-fascist’.
    • Rather, Antifa is more of a movement of activists whose followers share a philosophy and tactics.
    • They have made their presence known at protests, including the “Unite the Right” rally in Charlottesville, Virginia, in 2017.

    Its members

    • It is impossible to know how many people count themselves as members.
    • Its followers acknowledge that the movement is secretive, has no official leaders and is organised into autonomous local cells.
    • It is also only one in a constellation of activist movements that have come together in the past few years to oppose the far right.
    • Antifa members campaign against actions they view as authoritarian, homophobic, racist or xenophobic.

    Activism over years

    • Antifa members typically dress in black and often wear a mask at their demonstrations, and follow far-left ideologies such as anti-capitalism.
    • The movement has been known to have a presence in the US in the 1980s.
    • It shot into prominence following the election of President Trump in 2016, with violence marking some of its protests and demonstrations.
    • Criticizing mainstream liberal politicians for not doing enough, Antifa members have often physically confronted their conservative opponents on the streets.
    • The group also participates in non-violent protests. Apart from public counter-protests, Antifa members run websites that track white extremist and ultra-right groups.

    Criticisms

    • The movement has been widely criticised among the mainstream left and right.
    • Conservative publications and politicians routinely rail against supporters of Antifa, who they say are seeking to shut down peaceful expression of conservative views.

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  • Foreign Policy Watch: India-United States

    The 5G Club ‘D10’

    Prelims Only | International Relations | Mains Paper 2: Bilateral, Regional and Global Groupings and agreements involving India

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: D10 Club

    Mains level: Not Much

    Britain said that it was pushing the U.S. to form a club of 10 nations that could develop its own 5G technology and reduce dependence on Huawei.

    We can expect prelims question asking the purpose of the D10 group like-

    Q. The D10 Club recently seen in news is a- Environment NGO/ Group of Democracies/ etc.

    The D10 Club

    • The Britain is proposing a ‘D10’ club of democratic partners that groups the G7 nations with Australia and the Asian technology leaders South Korea and India.
    • It would include G7 countries – UK, US, Italy, Germany, France, Japan and Canada – plus Australia, South Korea and India.
    • It is aimed for channelling investments into existing telecommunication companies within the 10 member states.
    • The group aim to create alternative suppliers of 5G equipment and other technologies to avoid relying on China.

    Ruling out Huawei

    • Britain has allowed the Chinese global leader in 5G technology to build up to 35% of the infrastructure necessary to roll out its new speedy data network.
    • But their PM Boris Johnson was reported to have instructed officials to draw up plans to cut Huawei out of the network by 2023 as relations with China sour.

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  • Wildlife Conservation Efforts

    In news: Dibru-Saikhowa National Park (DSNP)

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

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Dibru-Saikhowa National Park

    Mains level: NA

    The Oil India Ltd (OIL) leak in Assam has contaminated water bodies that flow into the Maguri Motapung Beel, a large wetland, and the Dibru-Saikhowa National Park (DSNP).

    Try this PYQ from CSP 2019:

    Q. Which of the following are in Agasthyamala Biosphere Reserve?

    (a) Neyyar, Peppara and Shendurney Wildlife Sanctuaries; and Kalakad Mundanthurai Tiger Reserve

    (b) Mudumalai, Sathyamangalam and Wayanad Wildlife Sanctuaries; and Silent Valley National Park

    (c) Kaundinya, Gundla Brahme-swaram and Papikonda Wildlife Sanctuaries; and Mukurthi National Park

    (d) Kawal and Sri Venkateswara Wildlife Sanctuaries; and Nagarjunasagar-Srisailam Tiger Reserve

    About Dibru-Saikhowa National Park

    • DSNP is a national park in Assam located in Dibrugarh and Tinsukia districts.
    • It was designated a Biosphere Reserve in July 1997 with an area of 765 sq.km.
    • The park is bounded by the Brahmaputra and Lohit Rivers in the north and Dibru river in the south.
    • It mainly consists of moist mixed semi-evergreen forests, moist mixed deciduous forests, canebrakes and grasslands.
    • It is the largest Salix swamp forest in north-eastern India, with a tropical monsoon climate with a hot and wet summer and cool and usually dry winter.

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  • New Species of Plants and Animals Discovered

    Species in news: Band-tail Scorpionfish

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

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Band-tail scorpionfish

    Mains level: NA

    A rare band-tail scorpionfish was recently found in the Gulf of Mannar.

    A stand-alone species being mentioned in the news for the first time (and that too from Southern India) find their way into the prelims. Make special note here. Usually, note the species and its habitat location (IUCN status if available), in the purview of a generic prelims question.

    Band-tail scorpionfish

    • The band-tail scorpionfish (Scorpaenospsis neglecta) camouflages within the seagrass meadows.
    • It is well-known for its stinging venomous spines and ability to change colour.
    • The fish has the ability to change colour and blend with its surrounding environment to escape from predators and while preying.
    • The fish is called ‘scorpionfish’ because its spines contain neurotoxic venom.

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  • New Species of Plants and Animals Discovered

    Species in news: Amaltas or Indian Laburnum

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

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Amaltas Tree

    Mains level: NA

    The Amaltas or Indian laburnum has begun blooming this summer.

    Try this PYQ from CSP 2018:

    Q. Why is a plant called Prosopis juliflora often mentioned in news?

    (a) Its extract is widely used in cosmetics.

    (b) It tends to reduce the biodiversity in the area in which it grows

    (c) Its extract is used in the pesticides.

    (d) None of the above

    Amaltas Tree

    • The Amaltas (Cassia fistula linn), native to South-East Asia is one of the most widespread trees in India and South-East Asia, with their presence both in cities as well as in moist and dry forests.
    • It has drooping clusters of bright fragrant yellow flowers with five petals and characteristic cylindrical fruits.
    • The Amaltas is known by so many names — Indian Laburnum, Golden Shower, Purging Fistula, Pudding-pipe tree, Girmala, Rajbrikh, Alash, Kiar, Kirwara, Ali — showing us how common and loved it is.
    • It is both the national tree and the national flower of Thailand and is also the state flower of Kerala.

    Features of Amaltas

    • This middle-sized deciduous tree is leafless only for a brief time, between March and May.
    • The new leaves are glossy, a trait that they lose on maturing, and are mostly bright green, though sometimes a rich copper too.
    • It flowers from April to June, partly alongside the emergence of new leaves, but it’s not uncommon to find the Amaltas in flower as late as September.
    • The bark is yellowish at first, slowly coarsens with age and turning dark grey.

    Significance

    • The tree is mostly known to be ornamental and few know of its benefits as a medicinal plant, and one that’s loved by some mammals, bees, and butterflies.
    • The bark is used to make dye and the pulp in the fruit pod also serves as a strong purgative agent, which also helps animals that feed on it.
    • A medicinal preparation with the roots of the tree is used to cure leprosy and skin diseases and the leaves are used to get rid ulcers, in traditional medicine.

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