Which outcome occurs when poly-ethylene-terephthalate bottles are exposed to prolonged high temperature?

💡 Explanation

When PET bottles are heated, hydrolytic chain scission degrades the polymer because water molecules break the ester bonds, reducing the average molecular weight and mechanical strength. Therefore chain scission and strength reduction is the consequence, rather than increased crystallinity, cross-linking, or enhanced transparency which are driven by different exposure conditions.

• Which outcome primarily results when eigenfunctions fail to form a complete basis set for a quantum system's wavefunction transformation?
• Which consequence results when the normalization condition fails in quantum wave functions describing particles in a potential well?
• Which risk increases when multiple independent lasers operate in close proximity?
• Which consequence results when excessive **group velocity dispersion** distorts optical signals?
• Which risk dramatically increases when piezoelectric crystal actuators approach saturation?
• Which risk increases when the magnetic field stability fails within a tokamak reactor during deuterium-tritium fusion?