UPSC Prelims PYQ 1998: Match potassium compounds to uses

Match List I with List II and select the correct answer using the codes given below the lists:

List I

1. Potassium bromide
2. Potassium nitrate
3. Potassium sulphate
4. Mono-potassium tartarate

List II

1. Fertiliser
2. Photography
3. Bakery
4. Gunpowder

Codes:

1. I-B, II-D, III-A, IV-C
2. I-B, II-D, III-C, IV-A
3. I-D, II-B, III-C, IV-A
4. I-D, II-B, III-A, IV-C

Explanation

Option (a) is correct

• Potassium bromide is used in photography, potassium nitrate is an important component of gunpowder, potassium sulphate is used as a fertiliser, and mono-potassium tartarate (cream of tartar) is commonly used in bakery products.

Answer: (a) I-B, II-D, III-A, IV-C