Explanation:

- Calcium sulphate dihydrate is commonly known as gypsum.

- Gypsum is a soft sulfate mineral widely used in construction and as a fertilizer.

- Glass is a hard, brittle material made from silicates, unrelated to gypsum.

- Asbestos is a group of silicate minerals known for their fibrous nature and fire resistance, not related to gypsum.

- Limestone is a sedimentary rock primarily made of calcium carbonate, distinct from calcium sulphate dihydrate.

Your answer is option:1- gypsum.