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The combination that correctly matches the process in Group-$1$ with the entries in Group-$2$ is


&\text{Group-1} & \text{Group-2} \\ 
&\text{P. Wulff process} & \text{ I. Sulfur mining} \\ 
&\text{ Q. Sulfite process} & \text{II. Soda ash production} \\ 
&\text{R. Solvay process} & \text{III. Acetylene production }  \\ &\text{S. Frasch process} & \text{IV. Pulp production} \\
 \\  \end{array}$


  1. $P-II$, $Q-IV$, $R-III$, $S-I$
  2. $P-III$, $Q-IV$, $R-II$, $S-I$
  3. $P-IV$, $Q-I$, $R-II$, $S-III$
  4. $P-II$, $Q-I$, $R-IV$, $S-III$
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