Q. Consider the following statements about acetylene: 1. It is used in welding industry 2. It is a raw material for perparing plastics 3. It is easily obtained by mixing silicon carbide and water Of these statements : 

1. 1 and 2 are correct
2. 1 and 3 are correct
3. 2 and 3 are correct
4. 1,2 and 3 are correct