Which of the following statements are incorrect about phenol formaldehyde resin?

Question

Which of the following statements are incorrect about phenol formaldehyde resin? (A) Novolac or resol is a linear polymer and is used in the manufacture of adhesive (B) Bakelite is a cross linked polymer and is used in making switches and plugs (C) Novolac is prepared when (P/F) (phenol/formaldehyde) ratio if greater than 1, whereas bakelite is prepared when (P/F) ratio is less than 1 (D) Novolac is prepared when P/F < 1, and bakelite is prepared when P/F > 1

Tardigrade Admin · Accepted Answer

Novolac is prepared when P/F < 1, and bakelite is prepared when P/F > 1.

Q. Which of the following statements are incorrect about phenol formaldehyde resin?

Novolac or resol is a linear polymer and is used in the manufacture of adhesive

Bakelite is a cross linked polymer and is used in making switches and plugs

Novolac is prepared when (P/F) (phenol/formaldehyde) ratio if greater than 1, whereas bakelite is prepared when (P/F) ratio is less than 1

Novolac is prepared when P/F < 1, and bakelite is prepared when P/F > 1

Novolac is prepared when P/F < 1, and bakelite is prepared when P/F > 1.