Prelims Pinpointer 14-01-2026

Valley of Flowers National Park

Location

• Located in Chamoli district, Uttarakhand, within the Nanda Devi Biosphere Reserve.

Altitude and Area

• Spread over 87 sq. km.
• Lies between 3,352–3,658 metres above sea level.

Protected Status

• Declared a National Park in 1980.
• Inscribed as a UNESCO World Heritage Site in 1988.
• Part of Nanda Devi Biosphere Reserve, recognised as UNESCO Man and Biosphere (MAB) Reserve in 2004.

Physiography and Natural Features

• Situated in the transition zone between the Zanskar and Great Himalaya ranges.
• Characterised by alpine meadows, dense forests, waterfalls and snow-covered peaks.

River System

• Pushpawati River, originating from the Tipra Glacier, flows through the valley.
• It later joins the Alaknanda River.

Flora and Fauna

• • Plant Diversity

• Hosts 520–650 species of flowering plants, including orchids, primulas, poppies, daisies and brahmakamal.

• • Vegetation by Altitude
    • Sub-alpine (3,200–3,500 m): Maple, fir, birch, rhododendron.
    • Lower alpine (3,500–3,700 m): Juniper, willow, geranium.
    • Higher alpine (above 3,700 m): Mosses, lichens, blue Himalayan poppy.
• Fauna
  • Home to Asiatic black bear, snow leopard, musk deer, brown bear, red fox.
  • Notable bird species include the Himalayan monal.

Line of Actual Control (LAC)

What it is

• The Line of Actual Control (LAC) is the de facto military boundary separating Indian-controlled and Chinese-controlled territories.

Sectors of the LAC

• Eastern Sector: Arunachal Pradesh and Sikkim
• Middle Sector: Uttarakhand and Himachal Pradesh
• Western Sector: Ladakh

Length Dispute

• India’s view: LAC is about 3,488 km long.
• China’s view: LAC is about 2,000 km long.

Claim Lines

• India: LAC is not India’s claim line. India’s official claim line (Survey of India maps) includes Aksai Chin and Gilgit-Baltistan.
• China: LAC broadly reflects its claim line, except in the eastern sector, where it claims entire Arunachal Pradesh as “South Tibet.”

LAC vs Line of Control (LoC)

• Line of Control (LoC) 

• Between India and Pakistan

• • Emerged from the 1948 UN-brokered ceasefire line after the Kashmir war.
  • Designated as LoC in 1972 under the Shimla Agreement.
  • Delineated on maps, signed by DGMOs of both countries.
  • Has legal and international sanctity.
• Line of Actual Control (LAC)
  • Between India and China
  • Not a mutually agreed boundary.
  • Not delineated on maps or demarcated on the ground.
  • Exists only as a conceptual and differing perception-based line.

Arrangements to Manage LAC Differences

• 1993 Agreement: India formally accepted the concept of LAC during the PM’s visit to China.
• Agreement on Maintenance of Peace and Tranquillity at the LAC (1993) signed.
• Agreement did not clarify whether it referred to the LAC of 1959, 1962, or 1993.
• Joint Working Group (JWG) established to clarify alignment differences along the LAC.

Prevention of Corruption Act, 1988

Overview

• The Act consolidated provisions from PCA 1947, IPC, CrPC, and Criminal Law Act, 1952.
• It significantly expanded the definition of public servant across multiple categories.
• MPs and MLAs were excluded despite performing public obligations.
• Central and State governments may appoint Special Judges through Official Gazette notification.
• Special Judges must be or have been Sessions, Additional Sessions, or Assistant Sessions Judges.
• Only Special Judges can try offences under the Act and related connected offences.
• Conviction attracts minimum six months’ imprisonment, extendable up to five years.
• A major limitation was treating the bribe-giver as a victim, not criminally liable.

Prevention of Corruption (Amendment) Act, 2018

• Background

• • • Amendment process began in 2013, involving Standing Committee and Law Commission scrutiny.
    • The Bill was finally passed on 24 July 2018.
    • Objective was aligning Indian law with UNCAC obligations.

• Key Features of 2018 Amendment

• • Bribe-giving criminalised; immunity if complaint reported within seven days under coercion.
  • Criminal misconduct limited to illicit enrichment and fraudulent misappropriation.
  • Prior approval mandatory before inquiry against public servants, except trap cases.
  • Special Judges must conclude trials within two years, extendable up to four years.
  • Punishment enhanced to 3–7 years imprisonment, including for abetment.
  • Enabled attachment of property using PMLA, 2002 and Criminal Law Amendment Ordinance, 1944.

• Major Drawbacks

• • Prior approval at investigation stage may shield corruption.
  • Criminalising bribe-giving may discourage whistleblowing.
  • No explicit whistleblower protection provided.
  • Broad exemption for “legitimate income” may dilute illicit asset provisions.
  • Post-retirement benefits of officials remain unaddressed.
  • Quantum of fines for commercial organisations remains unspecified.

Shaksgam Valley (Trans-Karakoram Tract)

About the Valley

• Shaksgam Valley, also known as the Trans-Karakoram Tract, is a disputed territory claimed by India but currently under Pakistan’s control as part of Pakistan-Occupied Kashmir (POK).
• It is located in the Hunza–Gilgit region and borders China (Xinjiang) to the north, Northern Areas of POK to the south and west, and the Siachen Glacier region to the east.
• In 1963, Pakistan ceded the Shaksgam Valley to China through the Sino-Pakistan Boundary Agreement, despite India’s unresolved sovereignty claim over the region.
• Article 6 of the 1963 Agreement clearly states that after the final settlement of the Kashmir dispute between India and Pakistan, the boundary will be reopened for renegotiation with the legitimate sovereign authority.
• The agreement laid the strategic foundation for the Karakoram Highway, constructed jointly by China and Pakistan in the 1970s, enhancing military and economic connectivity.

BHASHINI Samudaye

Overview

• BHASHINI Samudaye is a collaborative ecosystem platform under BHASHINI.
• It aims to co-create, govern and scale Indian-language AI tools, datasets and services.
• It is led by the Digital India BHASHINI Division (DIBD) under the Ministry of Electronics and Information Technology.
• It operates as part of the National Language Translation Mission (NLTM).

Key Features

• Participatory AI governance model involving academia, states, NGOs and startups.
• BHASHINI APIs support real-time translation, speech-to-text and text-to-speech.
• BhashaDaan platform enables citizen-led creation of Indian-language datasets.
• Ethical data framework ensures consent-based, inclusive and standardised data.
• Live use-case demonstrations in governance, education and public service delivery.

Man Portable Anti-Tank Guided Missile (MPATGM)

About the Missile

• MPATGM is a third-generation, fire-and-forget, man-portable anti-tank guided missile system.
• It is designed to destroy modern main battle tanks and armoured vehicles.
• The system has been indigenously developed by Defence Research and Development Organisation (DRDO).
• Lead laboratory: Defence Research & Development Laboratory (DRDL), Hyderabad.

Key Technical Features

• Fire-and-forget capability: Missile self-guides after launch.
• Imaging Infrared (IIR) seeker: Enables day, night and low-visibility operations.
• Top-attack mode: Targets weakest armour on tank roof.
• Tandem HEAT warhead: Neutralises reactive armour before penetrating main armour.
• Engagement range: 200 m to 4,000 m.
• Man-portable launcher: Soldier-carried; can also be tripod- or vehicle-mounted.

Operational Significance

• Enhances infantry anti-armour capability in high-intensity conflicts.
• Reduces dependence on imported ATGM systems.
• Supports Aatmanirbhar Bharat in defence manufacturing.

Aerosols

What are Aerosols

• Aerosols are tiny solid or liquid particles suspended in the atmosphere.
• They influence air quality, weather and climate processes.

Sources

• Natural sources: Desert dust, sea spray, volcanic ash, forest fires.
• Anthropogenic sources: Vehicle emissions, industries, biomass burning, coal and diesel use.
• Primary aerosols: Emitted directly into atmosphere.
• Secondary aerosols: Formed from gases like SO₂ and NOx.

Key Characteristics

• Very small size: Can penetrate deep into lungs.
• Atmospheric lifetime: Remain suspended for days to weeks.
• Condensation nuclei: Facilitate fog and cloud droplet formation.
• Radiative effect: Can scatter or absorb sunlight.

Impacts

• Health impact: Cause respiratory and cardiovascular diseases.
• Fog formation: Increase density and persistence of fog.
• Climate cooling: Reflective aerosols reduce surface temperature.
• Climate warming: Black carbon absorbs heat.
• Rainfall alteration: Modify cloud properties and precipitation patterns.

Greenwald Limit

Overview

• Greenwald Limit is a theoretical upper limit on plasma density in a tokamak fusion reactor.
• It links maximum stable plasma density to the plasma current and reactor size.

Why it Matters

• Nuclear fusion requires high plasma density, temperature and confinement time.
• The Greenwald limit has acted as a key bottleneck to achieving self-sustaining fusion (ignition).

Key Characteristics

• Tokamak-specific limit: Applies to donut-shaped magnetic fusion reactors.
• Stability threshold: Crossing the limit normally causes plasma instability and collapse.
• Energy relevance: Higher plasma density increases collision rates and fusion output.
• Design constraint: Long treated as a fixed ceiling in reactor engineering.

Recent Development

• China’s EAST fusion reactor achieved 1.3–1.65 times the Greenwald limit with stable plasma.
• Achieved through divertor cooling and reduction of tungsten impurities.
• Validates Plasma–Wall Self-Organisation (PWSO) theory, indicating a new high-density operating regime.