A gaseous fuel mixture comprising 3 moles of methane and 2 moles of ammonia
is combusted in X moles of pure oxygen in stoichiometric amount. Assuming
complete combustion, with only CO2, H2O and N2 in the product gases, the value
of X is ___.
3 CH4 + 2 NH3 + X O2 → Products (CO2, H2O, N2)
Options:
(A) 7.5
(B) 5.5
(C) 8.5
(D) 9.5
Official Answer Key:
A
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2025 Q.33)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Air-Breathing & Rocket Propulsion** under *Propulsion* (1 Mark, MCQ).
**2. Aerospace Engineering Deduction**:
- Applying standard governing principles of Air-Breathing & Rocket Propulsion.
- Option **(A)** matches the analytical derivation and official criteria.
**3. Final Answer**:
Correct Option is **(A)**.
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