Answer
Verified
394.5k+ views
Hint: The successive stages in the transformation of vegetable matter into coal are- wood, peat, lignite, sub-bituminous, bituminous, steam coal, and anthracite. The purest form of coal contains 95% of coal.
Complete answer:
Coal is a highly carbonaceous matter that has been formed as a result of the alteration of vegetable matter (e.g. plants) under certain favorable conditions. It is chiefly composed of carbon (C), hydrogen (H), nitrogen (N), and oxygen (O) besides non-combustible inorganic matter.
The successive stages in the transformation of vegetable matter into coal are- wood, peat, lignite, sub-bituminous, bituminous, steam coal, and anthracite.
Peat is not considered as coal.
Lignite- It is also called brown coal and it is the dirtiest coal. It is used for power generation.
Sub-bituminous- It is used for steam-electric power generation. It is also used as a source of light aromatic hydrocarbon for chemical synthesis.
Bituminous- It is a dense black rock but sometimes it is dark brown. It is used as fuel in the power station. It is also for making coke.
Anthracite- It is black coal which is harder and has a glossy appearance. It can burn for a longer time and it has 85 – 95% carbon in it.
Hence the correct answer is an option (d)- Anthracite
Note:
The percentage of carbon in peat is 40-55%. In lignite 55-60% of carbon is present. In bituminous, the percentage of carbon is 40-80%. The anthracite carbon is found only in Jammu and Kashmir and that too in small quantities.
Complete answer:
Coal is a highly carbonaceous matter that has been formed as a result of the alteration of vegetable matter (e.g. plants) under certain favorable conditions. It is chiefly composed of carbon (C), hydrogen (H), nitrogen (N), and oxygen (O) besides non-combustible inorganic matter.
The successive stages in the transformation of vegetable matter into coal are- wood, peat, lignite, sub-bituminous, bituminous, steam coal, and anthracite.
Peat is not considered as coal.
Lignite- It is also called brown coal and it is the dirtiest coal. It is used for power generation.
Sub-bituminous- It is used for steam-electric power generation. It is also used as a source of light aromatic hydrocarbon for chemical synthesis.
Bituminous- It is a dense black rock but sometimes it is dark brown. It is used as fuel in the power station. It is also for making coke.
Anthracite- It is black coal which is harder and has a glossy appearance. It can burn for a longer time and it has 85 – 95% carbon in it.
Hence the correct answer is an option (d)- Anthracite
Note:
The percentage of carbon in peat is 40-55%. In lignite 55-60% of carbon is present. In bituminous, the percentage of carbon is 40-80%. The anthracite carbon is found only in Jammu and Kashmir and that too in small quantities.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Summary of the poem Where the Mind is Without Fear class 8 english CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Write an application to the principal requesting five class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE