Question : Which one of the following is known as the' brown coal'?
Option 1: Anthracite
Option 2: Bituminous
Option 3: coke
Option 4: lignite
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Correct Answer: lignite
Solution : The correct option is Lignite.
Lignite is often referred to as brown coal because of its brownish-black color and relatively low carbon content compared to other types of coal like bituminous or anthracite. It is considered the lowest rank of coal in terms of carbon content and energy density. Lignite is formed from peat under the pressure of sedimentary rock and is typically used for electricity generation in power plants.
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Question : Which of the following statements regarding coal is not correct?
Option 1: Anthracite is the highest quality hard coal.
Option 2: Coal that has been buried deep and subjected to increased temperatures is bituminous.
Option 3: Lignite is a low-grade brown coal, which is soft with high moisture content.
Option 4: Metallurgical coal is high-grade lignite coal which has a special value for smelting iron in blast furnaces.
Question : Which one of the following is not a coal variety?
Option 1: Lignite
Option 3: Dolomite
Option 4: Peat
Question : which one of the following is known as the ' Pearl City'?
Option 1: Kandla
Option 2: Tuticorin
Option 3: Kochi
Option 4: Hyderabad
Question : Which one of the following is known as the 'Pearl City' ?
Question : Which of the following is called the 'land of one thousand lakes'?
Option 1: Sweden
Option 2: Greenland
Option 3: U.S.A.
Option 4: Finland
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