Consider the following statements about acetylene:
1. It is used in welding industry.
2. It is raw material for preparing plastics.
3. It is easily obtained by mixing silicon carbide and water.
Of these statements:
A
I and II are correct
B
I and III are correct
C
II and III are correct
D
I, II and III are correct
Correct Answer: Option A
Explanation
1. The question asks to evaluate three statements about acetylene (C₂H₂).
2. Statement 1: It is used in the welding industry. This is true. Oxy-acetylene welding uses the very high temperature flame produced by burning acetylene in oxygen.
3. Statement 2: It is a raw material for preparing plastics. This is true. Acetylene can be polymerized to form polyacetylene and is also used as a starting material for synthesizing other monomers (like vinyl chloride for PVC) used in plastic production.
4. Statement 3: It is easily obtained by mixing silicon carbide and water. This is false. Acetylene is commonly produced by the reaction of calcium carbide (CaC₂) with water, not silicon carbide (SiC).
5. Therefore, statements 1 and 2 are correct.
6. This corresponds to option (A).