Question

1.Why wood powder burns rapidly than log of wood?
2.why water kept in papercup boils without burning the paper?
3.How many times faster a substance burns in oxygen than in aur?
4.which elements is present in the substance in large amount?
5.what do you mean by inflammable substance?
6.why burning substances extingues on burning water on it?

Answer 1

do it yourself or Google it



hope it helped

Answer 2

do it in Google it will help you