Class XII

Which is used in cancer therapy?
  1. EDTA
  2. Cis – Platin
  3. Cyanocobalamine
  4. Zeise’s salt
In the formation of complex entity, the central atom/ion acts as
  1. Lewis base
  2. Bronsted base
  3. Bronsted acid
  4. Lewis acid
The oxidation state of Ag in tollen’s reagent is
  1. +2
  2. +1.5
  3. +1
  4. 0
Which is not true about a ligand?
  1. A monodentate ligand cannot be chelating ligand
  2. It can be monodentate of multidentate
  3. A multidentate ligand cannot cause chelation
  4. It can act as a Lewis Base
Which of the following is a negative ligand?
  1. Nitrosyl
  2. Cyclopentadienyl
  3. Thiocarbonyl
  4. Carbonyl
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