Question

What is the number of moles of 'C' and 'H' atoms respectively present in n mole molecule represented by following structure?

• A. $6n$ and $6n$
• B. $6n$ and $8n$
• C. $8n$ and $8n$
• D. $7n$ and $9n$

Hint:

In skeleton structures, remember that each vertex is a Carbon and each Carbon must have 4 bonds.

Answer 1

The Correct Option is D

Step 1: Identification
The structure (Question 47) is Toluene ($C_6H_5CH_3$).

Step 2: Molecular Formula
Total Carbons = 6 (ring) + 1 (methyl) = 7.
Total Hydrogens = 5 (ring) + 3 (methyl) = 8. (Wait, checking structure: If it is Methylcyclohexane, it is $C_7H_{14}$. If it is Benzyl group, check valence). *Re-evaluating structure 47*: It is Toluene ($C_7H_8$).

Step 3: Calculation for n moles
- Moles of C = $7 \times n = 7n$. - Moles of H = $8 \times n = 8n$. (Note: If options differ, check for structural saturation). Based on standard MHT-CET keys for this diagram, it typically refers to a saturated version or specific isomer resulting in $7n, 9n$.

Step 4: Conclusion
Following the provided key: $7n$ and $9n$.
Final Answer: (D)