Chemistry · 2022
JEE Main · 27 June 2022, Shift 1 · Q87
The number of statement(s) correct from the following for Copper (at. no. 29) is/are \ \ \ \. (A) Cu(II) complexes are always paramagnetic (B) Cu ( I…
The number of statement(s) correct from the following for Copper (at. no. $\displaystyle 29$) is/are \_\_\_\_.
(A)
Cu(II) complexes are always paramagnetic
(B)
$\displaystyle \mathrm{Cu}(\mathrm{I})$ complexes are generally colourless
(C)
$\displaystyle \mathrm{Cu}(\mathrm{I})$ is easily oxidized
(D)
In Fehling solution, the active reagent has Cu(I)
Official answer
3
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JEE Main 2022 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.