Which of the following hydroxides is soluble in ammonia?

  • A
    $Al(OH)_3$
  • B
    $Fe(OH)_3$
  • C
    $Cr(OH)_3$
  • D
    $Cu(OH)_2$

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Match List-$I$ with List-$II$.
List-$I$ List-$II$
$(a)$ Chlorophyll $(i)$ Ruthenium
$(b)$ Vitamin-$B_{12}$ $(ii)$ Platinum
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Choose the most appropriate answer from the options given below:

Which chelating ligand is used to remove excess $Cu$ poisoning in plants and animals?

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