Question

Q. LPG is a better domestic fuel than wood​

Answer 1

Wood produces lots of smoke and unburnt carbon particles, which cause respiratory problems. But LPG does not produce these. Thats why LPG is a better domestic fuel than wood. 

Answer 2

1. LPG has more calorific value and produces no pollution. So it is better domestic fuel than wood.
2. The ignition temperature of paper is less, so it catches fire easily.
3. it does not catch fire when wrapped around aluminium pipe because aluminium absorbs the heat, so paper does not attain its ignition temperatures

$I hope it's helpful ☺️$