Question

What are the monomers used for preparation of PHBV?

• A. Cellulose xanthate and NaOH.
• B. 1,3-Butadiene and styrene
• C. \(\beta\)-Hydroxy butyric acid and \(\beta\)-Hydroxy valeric acid
• D. Ethylene glycol and phthalic acid

Hint:

PHBV is a biodegradable copolyester made from two hydroxy acids.

Answer 1

The Correct Option is C

Step 1: Name clue
PHBV stands for polyhydroxybutyrate-co-hydroxyvalerate, so the monomers are hydroxybutyric and hydroxyvaleric acids.

Step 2: Select
Only option (C) lists these two acids.

Step 3: Final check
The two hydroxy acids join through ester bonds to form the polyester PHBV, confirming option (C).

Final Answer:
Option (C) gives the monomers of PHBV. \[ \boxed{\text{(C) }\text{\beta-Hydroxy butyric acid and \beta-Hydroxy valeric acid}} \]