Question

2. How will you differentiate between
(a) combustible and non-combustible substances?
(b) luminous and non-luminous flame?
fleri​

Answer 1

Answer:

a)combustible substances are highly flammable and non-combustable do not burn or react with oxygen even in high temperatures

Explanation:

b)luminous flame is which has much of visible wavelength which can be observed by us by naked eyes

non-luminous flame is which has more intensity of non-visible wavelength thus we cannot see it