Question

C. Write True or False for the following statements:
1. Carbon dioxide was discovered in 1630.
2. Chemistry has solved most of the problems facing mankind.
3. The material of which a physical body is made up of is called a substance.
At the turn of nineteenth century, modern atomic theory was established.
5. Dyes are used in steel industries.​

Answer 1

1 true

5 false

2 true

3 you are third question pronunciation is wrong