A metal M which is not affected by strong acids like conc. HNO3, conc. H2SO4 and conc. solution of alkalies like NaOH, KOH forms MCl3, which finds use for tanni | d and f Block Elements — Chem-Mantra | Chem-Mantra

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Question

A metal M which is not affected by strong acids like conc. HNO3, conc. H2SO4 and conc. solution of alkalies like NaOH, KOH forms MCl3, which finds use for tanning in photography? The metal M is :

Answer: C

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