Answers

2015-10-21T22:30:47+05:30
Hi there,
charring occurs only when a hydrocarbon undergoes incomplete combustion.sand is not a hydro carbon.
i hope this helps u...
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2015-10-22T15:26:57+05:30
When hydrocarbon undergoes incomplete combustion then only the charging ocurs but as we know that the sand is not a hydrocarbon so it does not get charged.
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