Coal that has been buried deep and subjected to increased temperatures is bituminous coal.
Coal that has been buried deep and subjected to increased temperatures is bituminous coal.
Lignite is a low-grade brown coal, which is soft with high moisture content.
Lignite is a low-grade brown coal, which is soft with high moisture content.
Anthracite is the highest quality hard coal.
Anthracite is the highest quality hard coal.
Metallurgical coal is high grade lignite coal which has a special value for smelting iron in blast furnaces.
Metallurgical coal is high grade lignite coal which has a special value for smelting iron in blast furnaces.
Correct Answer:
Metallurgical coal is high grade lignite coal which has a special value for smelting iron in blast furnaces.
धातुशोधन (Metallurgical) कोयला उच्च श्रेणी के लिग्नाइट कोयला है जिसका वात्या भट्ठी (blast furnaces) में लोहे के प्रगलन में विशेष महत्त्व है।
