Question 3215 Deck General

70% to pass

For H2S detection, sensitized tapes indicate H2S presence by means of discoloration of an exposed spot on the tape. The shade of the color on the spot depends upon the concentration of H2S and which of the following factors?

A duration of the exposure

B humidity at the time of exposure

C air pressure at the time of the exposure

D air temperature at the time of the exposure

AI Explanation

The correct answer is A) duration of the exposure. The discoloration of the sensitized tape used for H2S detection depends on the concentration of H2S and the duration of the exposure. The longer the tape is exposed to H2S, the more intense the color change will be, indicating a higher concentration. The other factors, such as humidity, air pressure, and temperature, do not directly affect the color change of the tape, which is why they are incorrect answers.

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