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State PCS PYQPrelims 2019

UPPCS · Question 53

Which of the following is NOT correctly matched? (Substance – Use)

  1. Silver bromide – Artificial photosynthesis
  2. Silver iodide – Artificial rain
  3. Lithium bicarbonate – Treatment of rheumatism
  4. Milk of magnesia – Antacid
Show answer & explanation

Answer: (A) Silver bromide – Artificial photosynthesis

Explanation

Silver bromide is used in photography (light-sensitive film), not artificial photosynthesis. Silver iodide is used for cloud seeding, lithium salts for rheumatism/gout, and milk of magnesia as an antacid.