321406 All the $3\mathrm{d}$-series elements are good reducing agents except

321407 Pure conc. ${\mathrm{HNO}}_3$ makes iron passive as the surface is covered with protective layer of

321408 Assertion :
On adding $\mathrm{KI}$ to blue ${\mathrm{CuSO}}_4$ solution, the colour changes to dark brown.
Reason :
This is due to the formation of $\mathrm{CuO}$.

321406 All the $3\mathrm{d}$-series elements are good reducing agents except

321407 Pure conc. ${\mathrm{HNO}}_3$ makes iron passive as the surface is covered with protective layer of

321408 Assertion :
On adding $\mathrm{KI}$ to blue ${\mathrm{CuSO}}_4$ solution, the colour changes to dark brown.
Reason :
This is due to the formation of $\mathrm{CuO}$.

321409 Reactivity of transition elements decreases almost regularly from $\mathrm{Sc}$ to $\mathrm{Cu}$ because

321406 All the $3\mathrm{d}$-series elements are good reducing agents except

321407 Pure conc. ${\mathrm{HNO}}_3$ makes iron passive as the surface is covered with protective layer of

321408 Assertion :
On adding $\mathrm{KI}$ to blue ${\mathrm{CuSO}}_4$ solution, the colour changes to dark brown.
Reason :
This is due to the formation of $\mathrm{CuO}$.

321409 Reactivity of transition elements decreases almost regularly from $\mathrm{Sc}$ to $\mathrm{Cu}$ because

321406 All the $3\mathrm{d}$-series elements are good reducing agents except

321407 Pure conc. ${\mathrm{HNO}}_3$ makes iron passive as the surface is covered with protective layer of

321408 Assertion :
On adding $\mathrm{KI}$ to blue ${\mathrm{CuSO}}_4$ solution, the colour changes to dark brown.
Reason :
This is due to the formation of $\mathrm{CuO}$.

321409 Reactivity of transition elements decreases almost regularly from $\mathrm{Sc}$ to $\mathrm{Cu}$ because