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D and F Block Elements question

2018 · 16 Apr · Shift 1 · Q22

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JEE Main
Chemistry
D and F Block Elements
2018 · 16 Apr · Shift 1 · Q22

D and F Block Elements question

2018 · 16 Apr · Shift 1 · Q22

JEE MainChemistryD and F Block ElementsMCQ+4 / −1

The incorrect statement is :

A
$Cu^{2+}$ salts give red coloured borax bead test in reducing flame.
B
$Cu^{2+}$ and $Ni^{2+}$ ions give black precipitate with $H_2S$ in presence of $HCl$ solution.
C
Ferric ion gives blood red color with potasium thiocyanate.
D
$Cu^{2+}$ ion gives chocolate coloured preciitate with potassium ferrocyanide solution.

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