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D and F Block Elements question

2014 · Shift 1 · Q9
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  5. /2014 · Shift 1 · Q9

D and F Block Elements question

2014 · Shift 1 · Q9

JEE AdvancedChemistryD and F Block ElementsMultiple correct+3 / −1
The pair(s) of reagents that yield paramagnetic species is/are
  1. A
    NaNaNa and excess of NH3NH_3NH3​
  2. B
    KKK and excess of O2O_2O2​
  3. C
    CuCuCu and dilute HNO3HNO_3HNO3​
  4. D
    O2O_2O2​ and 2-ethylanthraquinol
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