Select the correct statement 1. Cut glasses are lead glasses. 2. The main raw material for the preparation of soda glass is Na2CO3. 3. Quicklime is CaO. A. 1 and 2 B. 2 and 3 C. 1 and 3 D. Only 2

The correct answer is D. Only 2.

1. Cut glasses are not necessarily lead glasses. Lead glass is a type of glass that contains lead oxide, which gives it a higher refractive index and makes it more brilliant. However, most cut glasses are made from soda-lime glass, which does not contain lead oxide.
2. The main raw material for the preparation of soda glass is sodium carbonate (Na2CO3), also known as soda ash.
3. Quicklime is calcium oxide (CaO), which is produced by heating limestone (CaCO3) to a high temperature.

Therefore, the only statement that is correct is 2.