Question

The carbonates of alkaline earth metals decompose on heating to give
(i) $CO _{2}$
(ii) Metal oxide
(iii) $H _{2} O$
(iv) $CO$

• A. (i), (iii) and (iv)
• B. (i) and (ii) only
• C. (i), (ii) and (iii)
• D. (ii) and (iii) only

Answer 1

Answer: (B)

All carbonates of alkaline earth metals decompose on heating to give metal oxide and carbon dioxide $\left( CO _{2}\right)$. All these carbonates are white solids and the oxide that are produced are also white solid
$\underset{\text{Metal carbonate}}{M \cdot CO _{3}} \xrightarrow{\Delta} \underset{\text { Metal oxide }}{ M \cdot O }+ CO _{2}$