Q. Consider the following statements :1. Baking soda is used in fire extinguishers.2. Quicklime is used in the manufacture of glass.3. Gypsum is used in the manufacture of Plaster of Paris.Which of the statements given above is/are correct ? 

1. 1 and 2
2. 2 and 3
3. 1 only
4. 1,2 and 3