To solve this question, we must analyze the given chemical reaction and understand the products formed at each step.
The initial reaction given is: \(CaCl_2 + Na_2CO_3 → X + Y\)
When calcium chloride (\(CaCl_2\)) reacts with sodium carbonate (\(Na_2CO_3\)), a double displacement reaction occurs.
The products of this reaction are calcium carbonate (\(CaCO_3\)) and sodium chloride (\(NaCl\)).
The next part of the sequence involves the formation of \(Z\) from \(X + Y\), that is, from \(CaCO_3\) and \(NaCl\). However, based on standard reactions, neither \(CaCO_3\) nor \(NaCl\) readily form another product like NCI or KCI easily without additional reactants or information.
However, by analyzing the options provided:
The correct answer is X: \(CaCO_3\), Y: \(NaCl\), Z: \(NCI\).
This implies Z = NCI aligns with the sequence given the options, common conceptual knowledge might suggest that 'NCI' could be a misinterpretation or a fictional placeholder.
In conclusion, the correct option based on the given choices is:
