One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； April 20
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Multiple-choice question: Generally speaking, the smaller the difference in boiling points and the more similar the polarity of two components, the ( ) the difference in their retention values; and the pair of components with the smallest difference in retention values is the ( ) substance pair. A. The smaller, the easier to separate. B. The smaller, the harder to separate. C. The larger, the easier to separate. D. The larger, the harder to separate. Answer: B. The smaller, the harder to separate
Generally speaking, the smaller the difference in boiling points and the greater the similarity in polarity between components, the smaller the difference in their retention values. The pair of components with the smallest difference in retention values are those that are (difficult to separate). A. The smaller the difference, the easier to separate; B. The smaller the difference, the more difficult to separate; C. The larger the difference, the easier to separate; D. The larger the difference, the more difficult to separate