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Listening Quiz: Thảo Luận Thiết Kế Sàng Lọc Xúc Tác – Easy Level
Th3 18, 2025
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bởi
Anna Phạm
trong
Tiếng Anh Hóa Học (English for Chemistry)
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1.
What is the main topic of the conversation?
Explaining how to analyze data after the experiment
Comparing different types of chemical reactions
Choosing a method to screen catalysts efficiently
Discussing how to manufacture catalysts
Explanation:
Emma and Robert talk about testing many catalysts quickly and choosing a fractional factorial design to screen factors efficiently.
2.
Why does Robert prefer a fractional factorial design?
It guarantees perfect results
It requires only one factor to be tested
It eliminates the need to test any catalysts
It is better for screening many factors
Explanation:
Robert says that a fractional factorial design is better for screening many factors.
3.
How many factors does Robert suggest testing at once?
Ten or more
Eight or nine
Five or six
Two or three
Explanation:
Robert says, ‘Maybe five or six to start with.’
4.
Why do Emma and Robert want to randomize the runs?
To focus only on the less important factors
To increase the number of catalysts tested
To make the experiment more expensive
To reduce bias in the results
Explanation:
Robert explains that randomization reduces bias in the results.
5.
What can be inferred about the full factorial design Emma first suggests?
Robert says it would reduce bias more than randomization
Emma believes it is the best way to ignore unimportant factors
Robert thinks it would involve too many tests
Emma and Robert agree it is the fastest choice
Explanation:
Robert responds that a full factorial design might be too many tests, so it can be inferred that he thinks it would require too much work for their goal.
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