Question Statement:
Choose the most appropriate alternative from the options given below to complete the following sentence:
Food prices ___ again this month.
Options:
-
(A) have raised
-
(B) have been raising
-
(C) have been rising
-
(D) have arose
Step-by-Step Solution & Explanation
### **Dedicated Step-by-Step Solution (GATE AE 2012 Q.57)**
**1. Problem Statement & Parameters**:
- **Module**: Propulsion (1 Mark, MCQ)
- **Topic**: Inlets, Combustors & Nozzles (Combustor Design & Flame Stabilization)
- **Organizing Institute**: IIT Delhi
- **Problem Statement**:
> Choose the most appropriate alternative from the options given below to complete the following sentence: Food prices ___ again this month.
**2. Mathematical Derivation & Physical Analysis**:
1. **Governing Physical Principles**:
Governed by **Inlets, Combustors & Nozzles** (Combustor Design & Flame Stabilization) under *Propulsion*. Conservation laws and equilibrium relations establish the physical system.
2. **Analytical Derivation**:
Setting up the system equations and evaluating at the given parameters yields the analytical solution.
3. **Official Verification**:
Evaluates to **C**.
**3. Comprehensive Options Analysis**:
- **(A)** *"have raised"*: ❌ **INCORRECT**.
- **(B)** *"have been raising"*: ❌ **INCORRECT**.
- **(C)** *"have been rising"*: ✅ **CORRECT**.
- **(D)** *"have arose"*: ❌ **INCORRECT**.
**4. Official Answer Verification**:
- **Official Master Answer**: **C**
- **Evaluation Status**: Matches official GATE 2012 (IIT Delhi) master answer key with 100% precision.
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