MCQ
Compound which on heating produces paramagnetic acidic gas?
- ✓$Mg(NO_3)_2$
- B$Fe_2(SO_4)_3$
- C$FeCO_3$
- D$HgC_2O_4$
$(b)\,\,F{e_2}{(S{O_4})_3}\xrightarrow{\Delta }F{e_2}{O_3} + S{O_3} \uparrow $
$(c)\,FeC{O_3}\xrightarrow{\Delta }FeO + C{O_2} \uparrow $
$(d)\,\,Hg{C_2}{O_4}\xrightarrow{\Delta }Hg + CO \uparrow + C{O_2} \uparrow + \frac{1}{2}{O_2} \uparrow $
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The structure of $D$ is

$CH_3 - CH = CH - CH_3 \xrightarrow{{{O_3}}} A $$\xrightarrow[{Zn}]{{{H_2}O}} B.$
The compound $B$ is

Statement $I :$ Pure Aniline and other arylamines are usually colourless.
Statement $II :$ Arylamines get coloured on storage due to atmospheric reduction.
In the light of the above statements, choose the most appropriate answer from the options given below:

