PRELIMS 2021 KEYS RAJA sir cracking IAS Academy

Latest News

CURRENT AFFAIRS, WHATS NEW

National Coal Index

    • It is a price index which reflects the change of price level of coal in a particular month relative to the fixed base year.
      • The base year for the NCI is Financial Year 2017-18.
    • Compilation:
      • Prices of coal from all the sales channels of coal,including import, as existing today are taken into account for compiling the NCI.
      • The amount of revenue shareper tonne of coal produced from auctioned blocks would be arrived at using the NCI by means of defined formula.
    • Sub-Indices:NCI is composed of a set of five sub-indices:
      • Three for Non Coking Coaland two for Coking Coal.
      • The three sub-indices for Non Coking Coal are combined to arrive at the Index for Non Coking Coal and the two sub-indices for Coking Coal are combined to arrive at the Index for Coking Coal.
      • Thus,indices are separate for Non Coking and Coking Coal.
        • As per the grade of coal pertaining to a mine, the appropriate sub-index is used to arrive at the revenue share.

Coal

TYPES_OF_COAL india

  • Coal is the most abundant fossil fuel which holds 55% of India''s energy need.
  • Based on the uses,coal is divided into two types:
    • Coking Coal:
      • This type of coal when subjected to high temperature carbonisation i.e. heating in the absence of air to a temperature above 600 degree Celsius, forms a solid porous residue called coke.
        • Cokeis fed into a blast furnace along with iron ore and limestone to produce steel in steel plants.
      • Coking coal is desired to be oflow ash percentage.
      • Use:
        • Mainly used in steel making and metallurgical industries.
        • Also used for hard coke manufacturing.
      • Non Coking Coal:
        • These are coals without coking properties.
        • Use:
          • This is the coal used in thermal power plants to generate electricity, so it is also known as steam coal or thermal coal.
          • Also used for cement, fertilizer, glass, ceramic, paper, chemical and brick manufacturing, and for other heating purposes.
        • Coal is also classified into four ranks: anthracite, bituminous, subbituminous, and lignite.The ranking depends on the types and amounts of carbon the coal contains and on the amount of heat energy the coal can produce.

 



POSTED ON 17-01-2024 BY ADMIN
Next previous

General Studies

Political Science and International Relations

Sociology

Some Reference Essays

List of previous year essay topics (1997-2019)

IAS GOOGLE is googled by the team of Raja Sir’s Cracking IAS Academy. Sources include The Hindu, Indian Express, pib.nic.in, Down To Earth, Economic Times, Vigyan Prasar, AIR and the like. IAS GOOGLE has been prepared in pace with emerging UPSC Trends.

LATEST NEWS

22 Nov
Atlantic Meridional Overturning Circulation(AMOC)
21 Nov
What were the events that led to the Quit India Movement? Point out its results. (Answer in 150 words) (UPSC IAS Mains 2024 General Studies Paper – 1)
21 Nov
Marriage as an institution has undergone a radical transformation from ‘ritual’ to ‘commercial’ in its outlook. Explain the factors behind this change.. (UPSC CSE Mains 2024 - Sociology, Paper 1).
21 Nov
Write approximately 150 words on "Locke’s views on Revolution". (UPSC CSE Mains 2024- Political Science and International Relations, Paper 1)

CATEGORIES

NEWSLETTER

Copyright © 2021 IAS Google. All Rights Reserved