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Which of the following statements are correct 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 is greater than 1, wheres 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.
Correct answer is option 'A,B,C'. Can you explain this answer?
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Which of the following statements are correct about phenol-formaldehy...
Novolac or resol is linear polymer and it is thermoplastic material.
Bakelite is cross linked polymer and P/F < 1.="" the="" structure="" has="" been="" mentioned="" />
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Which of the following statements are correct about phenol-formaldehy...
Introduction:
Phenol-formaldehyde resin, also known as phenolic resin, is a type of synthetic polymer that is widely used in various industries due to its excellent thermal, mechanical, and electrical properties. It is derived from the condensation reaction between phenol (P) and formaldehyde (F). There are two main types of phenol-formaldehyde resin: novolac and resol. Bakelite is a specific type of phenol-formaldehyde resin known for its cross-linked structure.
Correct statements:
The correct statements about phenol-formaldehyde resin are as follows:
a) Novolac or resol is a linear polymer and is used in the manufacture of adhesive.
- Novolac and resol are both linear polymers.
- Novolac is formed when the ratio of phenol to formaldehyde (P/F ratio) is greater than 1. It has excess phenol molecules that are not fully reacted with formaldehyde.
- Resol is formed when the P/F ratio is less than 1. It has excess formaldehyde molecules that are not fully reacted with phenol.
- Both novolac and resol are used in the manufacture of adhesives due to their strong bonding properties.
b) Bakelite is a cross-linked polymer and is used in making switches and plugs.
- Bakelite is a specific type of phenol-formaldehyde resin that has a cross-linked structure.
- It is formed by the condensation reaction between phenol and formaldehyde under high heat and pressure.
- Bakelite is known for its excellent electrical insulating properties, making it ideal for applications such as switches and plugs.
c) Novolac is prepared when the P/F ratio is greater than 1, whereas Bakelite is prepared when the P/F ratio is less than 1.
- Novolac and Bakelite are both prepared from the condensation reaction between phenol and formaldehyde, but they have different P/F ratios.
- Novolac is prepared when the P/F ratio is greater than 1, meaning there is an excess of phenol compared to formaldehyde.
- Bakelite is prepared when the P/F ratio is less than 1, meaning there is an excess of formaldehyde compared to phenol.
Therefore, the correct statements about phenol-formaldehyde resin are A, B, and C.
Phenol-formaldehyde resin, also known as phenolic resin, is a type of synthetic polymer that is widely used in various industries due to its excellent thermal, mechanical, and electrical properties. It is derived from the condensation reaction between phenol (P) and formaldehyde (F). There are two main types of phenol-formaldehyde resin: novolac and resol. Bakelite is a specific type of phenol-formaldehyde resin known for its cross-linked structure.
Correct statements:
The correct statements about phenol-formaldehyde resin are as follows:
a) Novolac or resol is a linear polymer and is used in the manufacture of adhesive.
- Novolac and resol are both linear polymers.
- Novolac is formed when the ratio of phenol to formaldehyde (P/F ratio) is greater than 1. It has excess phenol molecules that are not fully reacted with formaldehyde.
- Resol is formed when the P/F ratio is less than 1. It has excess formaldehyde molecules that are not fully reacted with phenol.
- Both novolac and resol are used in the manufacture of adhesives due to their strong bonding properties.
b) Bakelite is a cross-linked polymer and is used in making switches and plugs.
- Bakelite is a specific type of phenol-formaldehyde resin that has a cross-linked structure.
- It is formed by the condensation reaction between phenol and formaldehyde under high heat and pressure.
- Bakelite is known for its excellent electrical insulating properties, making it ideal for applications such as switches and plugs.
c) Novolac is prepared when the P/F ratio is greater than 1, whereas Bakelite is prepared when the P/F ratio is less than 1.
- Novolac and Bakelite are both prepared from the condensation reaction between phenol and formaldehyde, but they have different P/F ratios.
- Novolac is prepared when the P/F ratio is greater than 1, meaning there is an excess of phenol compared to formaldehyde.
- Bakelite is prepared when the P/F ratio is less than 1, meaning there is an excess of formaldehyde compared to phenol.
Therefore, the correct statements about phenol-formaldehyde resin are A, B, and C.
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Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer?
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Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer?.
Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer?.
Solutions for Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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Here you can find the meaning of Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer?, a detailed solution for Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer? has been provided alongside types of Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following statements are correct 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 is greater than 1, wheres bakelite is prepared when (P/F) ratio is less than 1.d)Novolac is prepared when P/F 1.Correct answer is option 'A,B,C'. Can you explain this answer? tests, examples and also practice JEE tests.
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