MCQ
Which compound on heating produces coloured metal oxide finally?
- A$Al_2(SO_4)_3$
- B$HgCO_33Hg(OH)_2$
- ✓$Cu(NO_3)_2$
- D$Ba(OH)_2$
✓
Answer
Correct option: C.
$Cu(NO_3)_2$
c
$(a)\,\,A{l_2}{(S{O_4})_3}\xrightarrow{\Delta }A{l_2}{O_3} + S{O_3} \uparrow $
$(a)\,\,A{l_2}{(S{O_4})_3}\xrightarrow{\Delta }A{l_2}{O_3} + S{O_3} \uparrow $
$(b)\,HgC{O_3}.3Hg{(OH)_2}\xrightarrow{\Delta }Hg + {O_2} \uparrow + C{O_2} \uparrow + {H_2}O$
$(c)\,Cu{(N{O_3})_2}\xrightarrow{\Delta }\mathop {CuO}\limits_{(Brown)} + N{O_2} \uparrow + \frac{1}{2}{O_2} \uparrow $
$(d)\,\,Ba{(OH)_2}\xrightarrow{\Delta }BaO + {H_2}O \uparrow $
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