The distinguishing reagent between silver and lead salts is:

What is the full form of $DMG$?

Which of the following pairs cannot be distinguished by passing $H_2S$ gas?

Upon treatment with ammoniacal $H_2S$,the metal ion that precipitates as a sulfide is

Three separate samples of a solution of a single salt gave these test results: one formed a white precipitate with excess ammonia solution,one formed a white precipitate with dilute $NaCl$ solution,and one formed a black precipitate with $H_2S$. The salt could be:

Sometimes yellow turbidity appears on passing $H_2S$ gas even in the absence of the second group radicals. This happens because