Why is a reaction’s product not always the end of the story?

Check your understanding

15-question test

Answer all the questions, then check your results.

1. True / False

   1.The announced chemistry Nobel would be shared by Henri B. Kagan and Kenso Soai.

   ATrueBFalse
2. 2.Peter Somfai placed Kagan’s recognised discoveries in 1986.

   ATrueBFalse
3. 3.A nonlinear relationship requires changes in the outcome to be proportional to changes in the input.

   ATrueBFalse

4. Reading Comprehension

   4.What distinguishes autocatalysis in the article’s explanation?

   AA reaction product helps catalyse the reaction that generates it.BA reaction proceeds without producing anything.CA reaction always gives a proportional response to every input.DA reaction’s products cannot influence its progress.
5. 5.Why does the article include the date 1986?

   ATo identify the year Soai received the Nobel.BTo establish when the announcement interview took place.CTo place Kagan’s recognised discoveries within a longer research history.DTo date the first use of chemistry in medicine.
6. 6.Inference: What should a reader conclude about recognition and experimental evidence?

   AA prestigious prize removes the need to examine individual results.BAll reactions covered by the same principle achieve identical outcomes.CRecognition of a principle does not establish every claim about a specific reaction.DA synthesis result is sufficient evidence of medical safety.

7. Grammar & Phrasal Verbs

   7.Which sentence would sound most natural in professional English?

   AThe distinction is worth to spell out before proceeding.BThe distinction is worth spelling off before proceeding.CThe distinction is worth to be spelling before proceeding.DThe distinction is worth spelling out before proceeding.
8. 8.Which alternative best preserves the meaning of “does not necessarily produce”?

   ACannot be assumed to produceBIs certain never to produceCHas already failed to produceDIs generally forbidden to produce
9. 9.Which reformulation best preserves the article’s distinction between an award and a new subject?

   AThe award establishes that the subject has no earlier research history.BThe award highlights an established research history rather than signalling the subject’s sudden emergence.CThe award recognises a research history despite proving that the subject is entirely new.DThe award replaces the research history with a newly created subject.

10. Prepositions

    10.Complete the sentence: “Autocatalysis concerns a product’s role ___ promoting the reaction itself.”

    AinBatConDfor
11. 11.Complete the sentence: “Distinguish a broad scientific principle ___ a verified account of a specific reaction.”

    AagainstBfromCoverDthrough
12. 12.Complete the sentence: “The award brings a long research history ___ view.”

    AontoBatCacrossDinto

13. Vocabulary & Synonyms

    13.What does “in perspective” mean in the article?

    ABeyond the possibility of further investigationBIn a way that maximises publicityCWithin a context that supports a balanced judgementDWithout considering the surrounding evidence
14. 14.Which phrase best captures “nonlinear” as explained in the article?

    AEntirely random in every circumstanceBNot governed by a simply proportional relationshipCUnchanged by any adjustmentDAlways directly proportional
15. 15.Which expression is closest in meaning to “spelling out” in this article?

    AWithholding the explanation ofBQuestioning the existence ofCReducing the importance ofDExplaining explicitly