Which one of the following is used to make ??on-stick??cookware?
- Poly-ethylene
- Polytetrafluoroethylene
- Polystyrene
- None of these
The Correct Option is B
Solution and Explanation
Top Questions on Polymers
- Which among the following is a biodegradable polymer?
- For polymers, match each process with the most suitable application listed.
Process Application P Extrusion 1 Producing complex parts with close tolerance Q Injection molding 2 Producing thermosetting plastic components R Blow molding 3 Producing long uniform sections S Compression molding 4 Producing hollow shapes - Caprolactam when heated at high temperature in presence of water, gives
- Match List -I with List-IIChoose the correct answer from the options given below:
List -I List-II A Buna-S I Vinyl chloride B Neoprene II 1,3-Butadiene and styrene C PVC III Tetra flouroethene D Teflon IV Chloroprene - Which of the following is a homopolymer?
Questions Asked in AIIMS exam
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : 02 is liberated in the non-cyclic photophosphorylation.
Reason (R) : Liberation of oxygen is due to photolysis of water.
In the light of the above statements, choose the correct answer from the options given below
- AIIMS - 2019
- Photosynthesis in higher plants
- Match the following column I with column II.
- AIIMS - 2019
- cloning
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : The Cro-Magnon man was the direct ancestor of the living modern man.
Reason (R) : Cro-Magnon man had slightly prognathous face.
In the light of the above statements, choose the correct answer from the options given below
- AIIMS - 2019
- evolution
- Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion: Orbit of a satellite is within the gravitational field of earth whereas escaping is beyond the gravitational field of earth.
Reason: Orbital velocity of a satellite is greater than its escape velocity.
In the light of the above statements, choose the correct answer from the options given below- AIIMS - 2019
- Gravitation
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : In eukaryotes, transcription occurs in nucleus.
Reason (R) : In bacteria, transcription and translation occurs in cytoplasm.
In the light of the above statements, choose the correct answer from the options given below
- AIIMS - 2019
- Transcription
Concepts Used:
Biodegradable Polymers
Microorganisms destroy biodegradable polymers in an appropriate amount of time, ensuring that biodegradable polymers and their degraded products have a low environmental result. Enzyme-catalyzed processes shatter these polymers down into little segments, and microorganisms manufacture these enzymes.
Biodegradable Polymers: Examples
- Poly-β-hydroxybutyrate-co-β-hydroxy valerate (PHBV)
- Polylactic Acid (PLA)
- Poly (ε-caprolactone) (PCL)
- Nylon-2-Nylon-6
Biodegradable Polymers: Properties
- Can maintain strong mechanical unification until they are degraded.
- Degradation, in general, starts at the end groups because biodegradable polymers have exceptionally strong carbon backbones that are difficult to crack.
- Non-toxic in nature.
- Degradation rates can be controlled.
- Lack of crystallinity, which inhibits access to end groups.
- Hydrophilic polymers.
Read More: Biopolymers