The distinguishing reagent between silver and lead salts is:

Which ion is precipitated by the reagent $NH_4Cl$ and aqueous $NH_3$?

Three different samples of a salt solution give the following test results: One sample gives a white precipitate with ammonia solution. One sample gives a white precipitate with dilute $NaCl$ solution. One sample gives a black precipitate with $H_2S$. Identify the salt.

Which of the following is not correctly matched?

Which ions can be separated using concentrated $NaOH$?

Which reagent is used to test for the presence of the $Fe^{+2}$ ion?