Question:medium
Observe the following sequence of reactions and identify the correct statements about \(W\), \(X\) and \(Z\):
\[
Ca + O_2 \rightarrow X \xrightarrow{H_2O} Y \xrightarrow{CO_2} Z \xrightarrow{-H_2O} Z \xrightarrow{H_2O/\text{ excess }CO_2} W
\]
I. W is soluble in water
II. Z is used as mild abrasive in toothpaste
III. X is slaked lime
Observe the following sequence of reactions and identify the correct statements about \(W\), \(X\) and \(Z\):
\[
Ca + O_2 \rightarrow X \xrightarrow{H_2O} Y \xrightarrow{CO_2} Z \xrightarrow{-H_2O} Z \xrightarrow{H_2O/\text{ excess }CO_2} W
\]
I. W is soluble in water
II. Z is used as mild abrasive in toothpaste
III. X is slaked lime
Show Hint
Quick lime \(=\) \(CaO\), Slaked lime \(=\) \(Ca(OH)_2\), Limestone \(=\) \(CaCO_3\).
Updated On: Jun 18, 2026
- I, III only
- II, III only
- I, II only
- I, II, III
Show Solution
The Correct Option is C
Solution and Explanation
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