Question

boojho wants to separate the following materials as combustible and non-combustible. can you help him? (charcoal, chalk, stone, iron rod, copper coin, straw, cardboard, glass, paper, candle, wood.)

Answer 1

combustible- charcoal, cardboard,paper,candle ,wood. while remaining are non combustible.

Answer 2

combustible substances-charcoal,cardboard, paper, candle, wood.
non-combustible substances-chalk, stone, iron rod, copper coin, straw, glass.