Question

name two substances that have low ignition temperature
so I mark

Answer 1

potassium and white Phosphorus are two substance which have low ignition temperature

Answer 2

The substance which have very low ignition temperature is also known as the non-flammable substance.
example - petrol, diesel, potassium, phosphorous etc.

Potassium and phosphorous have very low ignition temperature because it burns at the room temperature.