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Difficulty: HardExplicit Details

In a 2026 study of medieval European manuscripts, conservator Dr. Marcus Thorne and his team evaluated the efficacy of calcium hydroxide nanoparticles dispersed in short-chain alcohols for neutralising acid in historical inks. The researchers applied the dispersion to several fifteenth-century parchment folios that exhibited iron gall ink corrosion. The treatment successfully stabilised the cellulose matrix and neutralised active acids without altering the structural integrity of the parchment's collagen fibers. However, the team noted that the nanoparticles formed a thin, white crystalline haze on the surface of areas with dense carbon-based black ink deposits, whereas areas written with iron gall ink remained visually unaltered.

According to the text, which statement is true about the effects of the nanoparticle treatment on the parchment folios?

  1. A
    It altered the structural integrity of the parchment's collagen fibers.
  2. B
    It proved to be more effective at neutralising acids than other traditional wet chemical treatments.
  3. It produced a white crystalline haze on the surface of sections containing dense carbon-based black ink.Answer
  4. D
    It caused the iron gall ink to change color and become visually altered.

Answer

The nanoparticle treatment produced a white crystalline haze on the surface of sections containing dense carbon-based black ink.
The passage states that the nanoparticles 'formed a thin, white crystalline haze on the surface of areas with dense carbon-based black ink deposits.' This directly supports the statement that the treatment produced a white crystalline haze on the surface of sections containing dense carbon-based black ink.

Step-by-Step Solution

1
Analyze the prompt to understand the target of the question.
The question asks what statement is true about the effects of the nanoparticle treatment based on the text.
This establishes a clear criteria for identifying the correct detail directly stated in the passage.
2
Locate the section of the text describing the physical outcomes of the treatment.
The text lists several consequences: stabilization of the cellulose matrix, neutralization of acids, preservation of collagen fibers, formation of a white haze on dense carbon-based ink, and no visual changes to areas with iron gall ink.
This serves as the factual basis for evaluating each answer choice.
3
Compare the response options against the located facts.
The option referring to the white crystalline haze on dense carbon-based black ink matches the text perfectly. The other options contradict the passage or introduce external speculation.
This isolates the single, correct response supported explicitly by the text.

Key Concept

Locating and verifying explicit details within an academic passage.
Estimated Time:2m 0s
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