Verified Solution • 2025–26 Session moderate

QNEET-2022-Ch-467: NEET 2022 Chemistry - Class 11 NEET-2022-Ch-467 Solution: Which one of the following is not a calcination reaction?…

Which one of the following is not a calcination reaction? CaCO3+2HCl→CaCl2+H2O+CO2CaCO_3 + 2HCl \rightarrow CaCl_2 + H_2O + CO_2 ZnCO3→ZnO+CO2ZnCO_3 \rightarrow ZnO + CO_2 Fe2O3⋅xH2O→Fe2O3+xH2OFe_2O_3 \cdot xH_2O \rightarrow Fe_2O_3 + xH_2O CaCO3⋅MgCO3→CaO+MgO+2CO2CaCO_3 \cdot MgCO_3 \rightarrow CaO + MgO + 2CO_2

Multiple Choice Options

  • A CaCO 3 + 2HCl CaCl 2 + H 2 O + CO 2
  • B ZnCO 3 ZnO + CO 2
  • C Fe 2 O 3 . xH 2 O Fe 2 O 3 + xH 2 O
  • D CaCO 3 . MgCO 3 CaO + MgO + 2CO 2

Step-by-Step Verified Solution

Calcination involves heating when the volatile matter escapes leaving behind the metal oxide. Fe 2 O 3 . xH 2 O(s) _ _ Fe 2 O 3 (s) + xH 2 O(g) ZnCO 3 (s) _ ZnO(s) + CO 2 (g) CaCO 3 . MgCO 3 (s) _ CaO(s) + MgO(s) + 2CO 2 (g) CaCO 3 + 2HCl _ _ CaCl 2 + H 2 O + CO 2 Not calcination It is a neutralization reaction.

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