Question

Question 31
You are provided with three watch glasses containing milk, petrol and mustard oil, respectively. Suppose you bring a burning candle near these materials one by one, which material(s) will catch fire instantly and why?

Answer 1

The petrol will catch fire instantly.Petrol has low ignition temperature and high calorific value as compared to milk and mustard oil.
Therefore, out of these given three liquids, petrol will burn instantly producing a large amount of heat as well as light.