Ammonia leakage in the refrigeration system is detected by_________________?
Correct answer: D. Sulphur stick, which on detection gives white smoke
- A. Soap solution
- B. Using chemical reagents
- C. Its smell
- D. Sulphur stick, which on detection gives white smoke
Explanation
A sulfur stick produces sulfur dioxide, which reacts with leaking ammonia to form visible white ammonium-salt fumes. This makes the sulfur-stick test a standard practical method for locating ammonia leaks.
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