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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.