Author Question: All of the following statements about biodegradable polymers are true EXCEPT A) some can ... (Read 158 times)

go.lag · **on:** Aug 27, 2018

All of the following statements about biodegradable polymers are true EXCEPT

A) some can biodegrade by composting.
B) the most sustainable approach is to use renewable resources, especially non-food crops, as a monomer source.
C) their glass transition temperatures are very high.
D) many require microorganisms to degrade them.

Question 2

Quaternary salts with two long carbon chains and two smaller chains on the nitrogen are used as

A) bleaches.
B) analgesics.
C) fabric softeners.
D) weed killers.