Question

A piece of cotton cloth wrapped around an iron pipe does not catch fire easily. Which of the following reasons supports the above information ?

• A. Iron is non-combustible in nature
• B. Iron pipe does not attain its ignition temperature
• C. Cotton cloth wrapped around the pipe does not attain its ignition temperature
• D. Cotton cloth is non-combustible in nature

Answer 1

The correct option is C Cotton cloth wrapped around the pipe does not attain its ignition temperature

Cotton cloth by itself catches fire easily because it attains its ignition temperature.When heat is supplied to the pipe wrapped with cotton cloth, it is transferred to the iron pipe by conduction as iron is a metal and good conductor of heat. So in the presence of iron, the ignition temperature of cotton cloth is not achieved easily. Therefore, it does not catch fire easily.