Which of the following is the repeating unit in polyvinyl chloride (PVC)?

The glass transition temperature (Tg) is the temperature at which the ________regions of the polymers become ________.

Identify the β-pyranose form of D-glucose.

Which of the following compounds would produce an optically active aldaric acid?

Which of the following elements is used during vulcanization of rubber?

Bonus question An optically active D-aldohexose was treated with NaBH4 / H2O and produced an optically inactive alditol. When the same D-aldohexose was subjected to Wohl degradation followed by HNO3, it produced an optically inactive aldaric acid. Provide the name of this D-aldohexose.

Identify the β-pyranose form of D-glucose.

Bonus question An optically active D-aldohexose was treated with NaBH4 / H2O and produced an optically inactive alditol. When the same D-aldohexose was subjected to Wohl degradation followed by HNO3, it produced an optically inactive aldaric acid. Provide the name of this D-aldohexose.

Choose a possible segment of syndiotactic poly(vinyl fluoride).

What is the purpose of plasticizers?