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C_(60) is aromatic allotrope of carbon containing
Name an allotrope of carbon that is a good conductor of electricity.
Select the correct answer from A, B, C, D & E for each statement given below: A: Anthracite B: Diamond C: Carbogen D: Urea E: Lampblack An allotrope of carbon, obtained by burning kerosene oil in a limited supply of air.
Elemental carbon appears in many structural forms or allotropes . Three of these forms are crystalline -diamond ,graphite and the recently discovered fullerene (bucky ball ) -while more than 40 others including coke and carbon black are amorphous . Now there seems to be set as fourth crystalline allotrope of carbon. reported in 1995 by Lagow at the University of Texas . Newly discovered allotrope of carbon has the form :
With reference to the structure of the two crystalline allotropes of carbon, state why diamond is inert or unreactive while graphite in comparably more reactive,
Assertion (A) : C_(60) fullerence is an allotrope if carbon. Reason (R) :In C_(60) fullerene , five -menmebrd rings are isolated forem each other .
What are allotropes? Sketch the structure of two allotropes of carbon namely diamond and graphite.
Name three crystalline allotropes of carbon.
......................allotropes of carbon do not have a definite geometric shape.
Name the following: An allotrope of carbon used for the manufacture of coke.
JEE MAINS PREVIOUS YEAR ENGLISH-JEE MAINS-QUESTION