Question

Which of the following compound is slowly decomposed in light and turning black

• A. Calcium gluconate
• B. Boric acid
• C. Silver nitrate
• D. Sodium nitrite

Answer 1

Answer:

C. Silver nitrate

• Silver Nitrate (AgNO₃) is a chemical compound highly sensitive to light, a property known as photosensitivity.

• When exposed to light, it undergoes a chemical decomposition process where it breaks down into metallic silver, nitrogen dioxide, and oxygen.

• The accumulation of finely divided metallic silver causes the compound to turn from its original clear or white appearance to black or gray.