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CGP EDU Academic Team
Published on: August 14, 2026
How many of the following will volatilize on heating leaving no solid residue ?
(i) NaNO 3 (ii) NH 4 NO 3
(iii) Ca(H 2 PO 2 ) (iv) NH 4 HCO 3
(v) N 2 H 5 HSO 3 (vi) AlCl 3
(vii) [Cu(NH 3 ) 4 ]SO 4 (viii) FeSO 4 .7H 2 O
Text Solution
Verified by ExpertsThe correct answer is:
4
4 (ii, iv, v, vi)
Sol. NH 4 NO 3 
N 2 O + 2H 2 O
NH 4 HCO 3 
NH 3 + H 2 O + CO 2
N 2 H 5 HSO 3 
N 2 H 4 + H 2 O + SO 2
AlCl 3 
AlCl 3 (g) (sublimes)
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