Examkin

Soru

Zorluk: KolayMineral and Energy Resources of India

Arrange the following types of coal found in India in descending order of their carbon content and quality (from highest carbon content to lowest):

  1. 1Anthracite
  2. 2Bituminous
  3. 3Lignite
  4. 4Peat

Cevap

The correct sequence of coal types in descending order of carbon content is Anthracite, Bituminous, Lignite, and Peat.
Anthracite possesses the highest carbon content (>80-95%), followed by Bituminous (60-80%), Lignite (40-55%), and Peat (<40%). Therefore, arranging them from highest to lowest carbon content yields Anthracite, Bituminous, Lignite, and Peat.

Adım Adım Çözüm

1
Determine the carbon percentage for each variety of coal.
Anthracite has 80–95% carbon, Bituminous has 60–80%, Lignite has 40–55%, and Peat has under 40%.
Coal rank increases with carbon content and calorific value due to heat and pressure over geological time.
2
Order the coal types from highest carbon content to lowest.
Anthracite → Bituminous → Lignite → Peat.
This matches the descending order requirement.

Anahtar Kavram

Classification of Coal Grades by Carbon Content
Bu soruyu puanla

Konular

Mineral and Energy Resources of India

Bu konudan daha fazla soru