【Daily Question】9.22 Reply +2； To +3
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This post was last edited by zjp on 2015-9-23 at 17:46. 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 helps to foster an active atmosphere for technical exchanges while also providing members with certain financial rewards. 【Daily Question】 (Single-choice question) Which of the following statements is correct regarding the handling of liquid reagents? ( ) A. Place the cap of the reagent bottle upside down on the lab table. B. To be able to see the name of the substance, the label should face away from the palm when taking the reagent. C. Any excess reagent used should be poured back into its original container promptly; wasting reagents is strictly prohibited. D. Reagents with low boiling points should be stored in a refrigerator. Reply with your answers; participating in the quiz earns +2 wealth points. Those who answer all questions correctly will receive an additional +3 to +8 wealth points. Extra rewards will be given for thorough analyses and explanations of the questions or answers, or for detailed calculation processes. If your answers are 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.
In the description of obtaining liquid reagents, the correct option is (A).
In the description of obtaining liquid reagents, the correct option is (A).
In the description of obtaining liquid reagents, the correct option is (A).
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【Daily Question】 (Single-choice question) Which of the following statements regarding the handling of liquid reagents is correct? (D) A. Place the cap of the reagent bottle upside down on the lab table. B. To be able to see the name of the substance, the label should face outward from the palm when taking the reagent. C. Any excess reagent used should be poured back into the original bottle promptly; waste is strictly prohibited. D. Reagents with low boiling points should be stored in a refrigerator
A. Invert the cap of the reagent bottle on the lab table
In the description of obtaining liquid reagents, the correct option is (A). A. Place the cap of the reagent bottle upside down on the lab table. B. To be able to see the name of the substance, the label should face outward from the palm when taking the reagent. C. Any excess reagent used should be poured back into the original bottle promptly; waste is strictly prohibited. D. Reagents with low boiling points should be stored in a refrigerator
In the description of obtaining liquid reagents, which one is correct? ( ) A. Invert the cap of the reagent bottle on the lab table
In the description of obtaining liquid reagents, the correct option is (A. Invert the cap of the reagent bottle on the lab table). When pouring liquids, ① turn the bottle cap upside down; otherwise, it is easy to contaminate the reagents in the reagent bottle ； ②The label faces the palm to prevent liquid from spilling and contaminating the label ； ③After use, close the bottle with its cap and put the label back in place with the side facing outward