Solution:
Concept- Compounds are named by considering different cations and anions in them.Consider
, the cation present is aluminium in +3 oxidation state and anion is sulphate ion. Thus, it has the name Aluminium sulphate. It is soluble in water and is primarily employed as a coagulant in the filtration of drinking water, the treatment of sewage, and the production of paper.Consider
, that the cation present is ammonium in +1 oxidation state and hydroxide ion in -1 oxidation state. Thus, it has the name Ammonium hydroxide. A colourless liquid chemical solution is ammonium hydroxide. It belongs to the caustic group of chemicals. When ammonia dissolves in water, ammonium hydroxide is created.Hence, the correct answer is option 1.
