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Salt Analysis

JEE Main 2021 (Online) 27th July Evening Shift

MCQ+4 / -12021
To an aqueous solution containing ions such as Al3+, Zn2+, Ca2+, Fe3+, Ni2+, Ba2+ and Cu2+ was added conc. HCl, followed by H2S.

The total number of cations precipitated during this reaction is/are :

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