An acidic solution of 'X' does not give precipitate on passing H2S through it. 'X' gives white precipitate when NH4OH is added to it. The white precipitate dissolves in excess of NaOH solution. Pure 'X' fumes in air and dense white fumes are obtained when a glass rod dipped in NH4OH is put in the fumes. Compound 'X' can be (a) ZnCl2 (b) FeCl3 (c) AlCl3 (d) SnCl2

 

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An acidic solution of 'X' does not give precipitate on

passing H2S through it. 'X' gives white precipitate when

NH4OH is added to it. The white precipitate dissolves in

excess of NaOH solution. Pure 'X' fumes in air and dense

white fumes are obtained when a glass rod dipped in NH4OH

is put in the fumes. Compound 'X' can be

(a) ZnCl2 (b) FeCl3

(c) AlCl3 (d) SnCl2

Answer: a