Question

please give me answer fast its urgent ​

Answer 1

eg. of hard material is door and chair.

2nd- nitrogen and methane gas

3rd-a cork and a piece of wood.

4th-wood and metal

5th-wood paper and plastic paper

hope you will understand

Answer 2

Answer:

a. stone , steel cup

b. carbon dioxide , oxygen

c. iron ball , mercury

d. wood , iron sheet

e. WOOD,PAPER