Match the followings:
| Component of flame safety lamp | Purpose of component |
| P. Asbestos ring | 1. Dissipation of heat of flue gas |
| Q. Wire gauges | 2. Formation of air-tight joints |
| R. Outer glass | 3. Arrest of explosion inside the lamp |
| S. Combustion chimney | 4. Separation of inlet air from flue gas |
A. P-2, Q-1, R-3, S-4
B. P-4, Q-1, R-2, S-3
C. P-2, Q-4, R-3, S-1
D. P-1, Q-2, R-4, S-3
Answer: Option A
This Question Belongs to Mining Engineering >> Mine Ventilation
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