Question:
Which of the following is not the raw material in Solvay process?
Which of the following is not the raw material in Solvay process?
Show Hint
Raw materials of the Solvay process:
\begin{itemize}
\item Brine (\(\mathrm{NaCl}\))
\item Limestone (\(\mathrm{CaCO_3}\))
\item Ammonia (\(\mathrm{NH_3}\))
\item Water
\end{itemize}
The major by-product formed is \(\mathrm{CaCl_2}\).
Updated On: Jul 9, 2026
- \(\mathrm{NH_3}\)
- \(\mathrm{NaCl}\)
- \(\mathrm{CaCl_2}\)
- \(\mathrm{Ca(OH)_2}\) \bigskip
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The Correct Option is C
Solution and Explanation
Concept:
The Solvay process is used for the manufacture of sodium carbonate. The raw materials are brine (\(\mathrm{NaCl}\)), ammonia, limestone (\(\mathrm{CaCO_3}\)) and water.
Step 1: Identify the raw materials.
• \(\mathrm{NaCl}\) -- Raw material.
• \(\mathrm{NH_3}\) -- Used in the process and regenerated.
• \(\mathrm{Ca(OH)_2}\) -- Obtained during the process and used for ammonia recovery.
• \(\mathrm{CaCl_2}\) -- By-product of the process.
Step 2: Final conclusion. Since \(\mathrm{CaCl_2}\) is formed as a by-product and not used as a raw material, \[ \boxed{\mathrm{CaCl_2}} \] is the correct answer. Hence, the correct option is \(\boxed{(C)}\).
Step 1: Identify the raw materials.
• \(\mathrm{NaCl}\) -- Raw material.
• \(\mathrm{NH_3}\) -- Used in the process and regenerated.
• \(\mathrm{Ca(OH)_2}\) -- Obtained during the process and used for ammonia recovery.
• \(\mathrm{CaCl_2}\) -- By-product of the process.
Step 2: Final conclusion. Since \(\mathrm{CaCl_2}\) is formed as a by-product and not used as a raw material, \[ \boxed{\mathrm{CaCl_2}} \] is the correct answer. Hence, the correct option is \(\boxed{(C)}\).
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