【Daily Question】August 20, 2016 – Participate to earn +2 wealth； +3 to +10 wealth for correct answers

Thread Content

To increase the popularity of the chemical analysis section, a \"One Question per Day\" campaign has been launched to foster an active atmosphere for technical exchanges while offering rewards in the form of financial benefits to users. 【Daily Question】 (Single-choice question) When measuring the conductivity of water used in laboratories, it is necessary to avoid the dissolution of （） from the air into the water, as this can cause the conductivity of the water to （）。 A. Oxygen, decrease B. Carbon dioxide, increase C. Oxygen, increase D. Carbon dioxide, decrease. Correct answer: B. Please reply with your answer; participating in the quiz earns you +2 points. Those who get all answers correct will receive an additional +3 to +8 points. Those who provide a thorough analysis or explanation of the question and answers, or include detailed calculation processes, will receive extra points as a reward. If your answer is correct and your analysis is accurate, it will be marked as the best reply. Feel free to answer the questions.