Match List I with List II and select the correct answer using the codes given below the lists: 1. List I - List II 2. I. Potassium bromide - A) Fertiliser 3. II. Potassium nitrate - B) Photography 4. III. Potassium sulphate - C) Bakery 5. IV. Mono-potassium tartarate - D) Gunpowder

1. The task is to match items in List I (Potassium compounds) with their uses in List II. 2. I. Potassium bromide (KBr): Used historically in photography (as part of developers/emulsions) and also has sedative properties. Matches B. 3. II. Potassium nitrate (KNO₃): A key component of gunpowder (black powder) and also used as a fertiliser. Matches D (Gunpowder is listed). 4. III. Potassium sulphate (K₂SO₄): Primarily used as a fertiliser, providing potassium and sulfur. Matches A. 5. IV. Mono-potassium tartrate (KC₄H₅O₆), also known as Cream of Tartar: Used in bakery as a leavening agent. Matches C. 6. Combine the matches: I-B, II-D, III-A, IV-C. 7. This corresponds to option (A).