All of the Following Are Engineering Advances of the Medieval

question 12

Multiple Choice

All of the following are engineering advances of the medieval period except for

• A) the number zero.
• B) horseshoes.
• C) the waterwheel.
• D) gunpowder.

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Definitions:

Polypropylene

A thermoplastic polymer used in a wide variety of applications, known for its toughness, flexibility, and resistance to various chemical solvents, acids, and bases.

Millad NX8000

A highly efficient clarifier used in the production of transparent polypropylene plastics, enhancing clarity and physical properties.

Acetonide

An acetonide is a ketal formed from the diol (a molecule with two hydroxyl groups) and acetone, often used as a protective group in organic synthesis.

1,2,4,5-tetrahydroxybenzene

A benzene ring substituted with four hydroxyl groups at the 1, 2, 4, and 5 positions, known for participating in complex chemical reactions.