Deck : Deck General - 2830/5076
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| 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 |
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