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STD 12 - 4. d and f- block elements — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 4. d and f- block elements4 Marks
MCQ
Compound which on heating produces paramagnetic acidic gas?
  • ✓
    $Mg(NO_3)_2$
  • B
    $Fe_2(SO_4)_3$
  • C
    $FeCO_3$
  • D
    $HgC_2O_4$
✓

Answer

Correct option: A.
$Mg(NO_3)_2$
a
$(a)\,\,Mg{(N{O_3})_2}\xrightarrow{\Delta }MgO + \mathop {N{O_2} \uparrow }\limits_{(Paramagnetic)}  + {O_2} \uparrow $

$(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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