question_answer 36)

  Which among the following statement(s) is/are true? Exposure of silver chloride to sunlight for a long duration turns grey due to (i) the formation of silver by decomposition of silver chloride. (ii) sublimation of silver chloride. (iii) decomposition of chlorine gas from silver chloride. (iv) oxidation of silver chloride. (a) (i) Only                           (b) (i) and (iii)                     (c) (ii) and (iii)                    (d) Only (iv)

Answer:

  (a) Decomposition of silver chloride takes place in the presence of sunlight. In this reaction, the white colour of silver chloride changes greyish white due to the formation of silver metal.