A) Paper is non-combustible in nature
B) Aluminium is non-combustible in nature
C) Aluminium pipe does not attain its ignition temperature
D) Paper wrapped around the pipe does not attain its ignition temperature
Correct Answer: D
Solution :
Both aluminium and paper are combustible substances. When heat is supplied to the paper, it is transferred to the aluminium pipe by conduction. In the presence of aluminium, the ignition temperature of paper is not achieved. Therefore, it does not catch fire easily. It is important to note that attaining the ignition temperature is a prerequisite for combustion to take place. The correct answer is D.
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