MCQ
Which has yellow colour
- APotassium cobaltinitrite
- BPotassium hexanitro cobaltate $(III)$
- CFischer's salt
- DAll the above
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$R =0.083\, L$ bar $K ^{-1} \,mol ^{-1}$ ) (Nearest integer)
Reason : Conc. $HNO_3$ reacts with metal and first produces a metal nitrate and nascent hydrogen. The nascent hydrogen then further reduces $HNO_3$ to $NO_2$.