MolSynapsequestion bank
MolSynapse / Question bank / s-Block Elements / Carbonates and bicarbonates, thermal stability
JEE Advanced levelOne or more correct optionsDifficulty 3 of 3sb158

Limestone is strongly heated and the gas X evolved is passed into lime water, which first turns milky (precipitate Y) and then, with excess X, becomes clear (solution Z). Select the correct statement(s).

  1. AY is .
  2. BX is .
  3. CZ contains .
  4. DBoiling Z regenerates Y with release of X.

Answer: A, B, C, D

gives X. gives the milkiness Y. Excess gas gives , a soluble salt, which on boiling reverses to with release. All four statements are correct.
Practice s-Block Elements More on Carbonates and bicarbonates, thermal stability
Previous questionNext question

More questions on Carbonates and bicarbonates, thermal stability