SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Graphene sheets burn at
A
a higher temperature than graphite
B
the same temperature as graphite
C
a lower temperature than graphite
D
None of the above
Explanation: 

Detailed explanation-1: -Yes, graphene burns. This is because graphene contains carbon atoms and carbon atoms burn in oxygen to yield carbon dioxide. In the presence of limiting amounts of oxygen graphene will produce the toxic compound carbon monoxide as a product.

Detailed explanation-2: -Because it is a two dimensional structure, it is the only form of carbon where a single carbon atom is exposed for chemical reactions. This, in conjunction with the fact that a single sheet of graphene has the maximum surface area, makes it the most reactive form of carbon.

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