Embibe Experts Solutions for Chapter: The d- and f-Block Elements, Exercise 2: EXERCISE-2

Acidified ${\mathrm{KMnO}}_4$ can be decolourised by :

The hydrated cupric chloride is strongly heated. Which of the following statement(s) is (are) correct for this:

${\mathrm{CuSO}}_4(\mathrm{aq}.)+4{\mathrm{NH}}_3⟶\mathrm{X},$ then $\mathrm{X}$ is :

When excess of sodium thiosulphate is added to dil. ${\mathrm{AgNO}}_3$ solution a soluble compound $\mathrm{X}$ is formed. However, when dil. ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3$ solution is addeed to conc. ${\mathrm{AgNO}}_3$ solution a white ppt. turning yellow and finally black ppt. of $\mathrm{Y}$ is obtained. Which is/are not correct pair:

Which of the following statement(s) is (are) correct with reference to ferrous and ferric ions

Select the incorrect statement(s):

Cuprous chloride can be prepared:

Which of the following ions are coloured?