A) \[C{{O}_{2}}\]and \[CO\]
B) \[CO\] and \[C{{O}_{2}}\]
C) \[C{{O}_{2}}\]and\[C{{O}_{2}}\]
D) \[CO\] and \[CO\]
Correct Answer: C
Solution :
\[\underset{\text{Slaked}\,\text{lime}}{\mathop{Ca{{(OH)}_{2}}}}\,\xrightarrow[\Delta ]{A}\underset{\text{White}\,\,\text{ppt}\text{.}}{\mathop{CaC{{O}_{3}}}}\,\xrightarrow[\text{Prolonged}\,\text{bubbling}]{}\] \[\underset{\text{Soluble}\,\,\text{calcium}\,\text{bicarbonate}}{\mathop{\text{Ca(HC}{{\text{O}}_{\text{3}}}{{\text{)}}_{\text{2}}}}}\,\xrightarrow{\Delta }\underset{\text{white}\,\text{ppt}\text{.}\,\text{reappear}}{\mathop{CaC{{O}_{3}}+\underset{(B)}{\mathop{C{{O}_{2}}}}\,\uparrow }}\,\] So, the gas A is \[C{{O}_{2}}\]and gas B also is\[C{{O}_{2}}\].
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