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प्रश्न
State in brief the transformation of vegetable matter to different types of coal varying in carbon content.
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उत्तर
Transformation of vegetable matter to coal is due to slow bacterial decomposition of vegetable matter under the influence of heat from within the earth, high pressure of earth (soil) above it and in absence of oxygen over millions of year.
The different stages of transformation of vegetable matter results in different types of coal
- 60%C is peat
- 65%C is lignite
- 85%C is bituminous
- 90%C is anthracite
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संबंधित प्रश्न
Choose the correct alternative.
In combined state, carbon occurs as
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Carbon constitues 0.03% of the earth’s crust.
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bone is heated in the absence of air.
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Name a gas which, though a compound of carbon, is not studied under organic chemistry.
Name of the following compounds :


Complete the statement by filling the blank with the correct word from the option.
______ Chemistry is the Chemistry of carbon compounds mainly of ‘Carbon’, ‘Hydrogen’ & ‘Oxygen’.
Vinegar is a solution of
Answer the following by rearranging the jumbled letters :
In this molecule, carbon is attached to four hydrõgen atoms.
emathen.
