【Daily Question】9.16 Reply +2； To +3
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This post was last edited by zjp on 2015-9-17 at 11:44. In order to increase the popularity of the chemical analysis section, the previous 【Weekly Topic】 activity has been replaced with a 【Daily Question】 activity; this aims to foster an active atmosphere for technical exchanges while also providing members with financial rewards. 【Daily Question】 (Single-choice question) Common volatile and toxic gases in analytical chemistry include: ( ). A. N2 B. H2 C. H2S D. O2 Correct answer: C. H2S Please reply with your answer; participating in the quiz earns you +2 wealth points. Getting all answers correct grants an additional +3 to +8 wealth points. Those who provide thorough analyses and explanations for the questions or answers, or include detailed calculation processes, will receive extra wealth points as a reward. If your answer is correct and your analysis is accurate, it will be marked as the best reply (or the best assistance). Feel free to answer the questions. Note: We will close this post after 24 hours, and at that time we will announce the best reply (the best assistance), as well as the answer and explanation.
【Daily Question】 (Single-choice question) Common volatile and toxic gases in analytical chemistry include: (C. H2S). A. N2 B. H2 C. H2S D. O2
Option C: Hydrogen sulfide is extremely foul-smelling; during the pilot testing, it almost killed people due to its toxic fumes.
Common volatile and toxic gases used in analytical testing include: (C). A. N2 B. H2 C. H2S D. O2
C. H2S----------------------------
Common volatile and toxic gases used in analytical testing include: (C). A. N2 B. H2 C. H2S D. O2
Common volatile and toxic gases used in analytical testing include: (C. H2S). Smell of rotten eggs. . . A. N2 B. H2 C. H2S D. O2
Common volatile and toxic gases used in analytical testing include: (C. H2S). A. N2 B. H2 C. H2S D. O2
Common volatile and toxic gases used in analytical testing include: ( ). C. H2S
Common volatile and toxic gases used in analytical testing include: (C).