Question

In which of the following sets, the reaction and catalyst are correctly matched?

• A. I, II, III
• B. I, II only
• C. II, III only
• D. I, III only

Hint:

Remember industrial catalysts: Contact Process → \(V_2O_5\), Deacon Process → \(CuCl_2\), Sulfuryl chloride formation → Charcoal.

Answer 1

The Correct Option is A

Step 1: Set up the matching task.
We must check whether each industrial reaction is paired with its correct catalyst. We take the three statements one by one.
Step 2: Check statement I.
$SO_2+Cl_2 \rightarrow SO_2Cl_2$ (sulfuryl chloride) is carried out using activated charcoal as catalyst. This pairing is correct.
Step 3: Check statement II.
$2SO_2+O_2 \rightarrow 2SO_3$ is the contact process step, catalysed by vanadium pentoxide $V_2O_5$. This pairing is correct.
Step 4: Check statement III.
$4HCl+O_2 \rightarrow 2Cl_2+2H_2O$ is the Deacon process, catalysed by $CuCl_2$. This pairing is also correct.
Step 5: Combine the results.
All three reaction and catalyst pairs are correctly matched, so I, II, and III are all valid.
Step 6: Select the option.
The set I, II, III corresponds to option (1).
\[ \boxed{\text{I, II, III correctly matched (Option 1)}} \]