Examkin

Question

Difficulty: MediumSentence-Level Transitions

Passage

In 1856, eighteen-year-old chemist William Henry Perkin was attempting to synthesize quinine, a drug used to treat malaria, in his home laboratory. His experiments failed, yielding only a dark, sticky residue. Consequently, he noticed that this sludge dissolved in alcohol to produce a beautiful, vibrant purple color, leading to the accidental discovery of mauveine, the world's first aniline dye.

Which choice most effectively establishes the logical relationship between the two sentences?

  1. A
    NO CHANGE
  2. However,Answer
  3. C
    Furthermore,
  4. D
    Thus,

Answer

The correct option is the transition that expresses contrast, which is 'However,'.
The sentence describing the failure of Perkin's experiment to produce quinine contrasts with the subsequent sentence describing his discovery of a beautiful purple dye. The transition showing contrast ('However,') correctly connects these two contrasting ideas.

Step-by-Step Solution

1
Analyze the context before the transition.
The preceding sentence states that Perkin's experiment failed to produce quinine and instead yielded a useless dark, sticky residue.
Understanding the first point of comparison is necessary to determine the logical connection.
2
Analyze the context after the transition.
The following clause describes a positive, surprising discovery: the sludge dissolved in alcohol to produce a beautiful, vibrant purple color.
Identifying the second point of comparison helps determine if the relationship is addition, cause-effect, contrast, or illustration.
3
Evaluate the logical relationship and select the appropriate transition.
A contrast exists between the failed experiment (negative outcome) and the discovery of a beautiful dye (positive outcome). Therefore, a transition showing contrast, like 'However,', is required.
Ensures the transition matches the relationship between the two sentences.

Key Concept

Sentence-level transitions must reflect the precise logical relationship (contrast, cause-effect, addition, illustration) between adjacent ideas.
Rate this question

Topics

Sentence-Level Transitions

More questions from this topic