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Why is reaction between polyvinyl alcohol and butyraldehyde for the formation of polyvinyl butyral, which is to be used for safety glass application, is stopped at about 75% conversion?
______________________ contains binding material such as polyvinyl Acetate, synthetic resins, etc.
In which of the following solvents, is polyvinyl acetate immiscible?
What colour is obtained when polyvinyl acetate is brought in contact with iodine solution?
The styrene radical is apparently 500-1000 times less reactive than the vinyl acetate monomer, and also the styrene monomer is 50-100 times less reactive than the vinyl acetate monomer. State true or false.
Cellulose acetate-butyrate is more suitable than cellulose acetate for producing movie films. State true or false.
A bacterial culture with an appropriate biomass composition of CH1.8O0.5N0.2 is grown aerobically on a defined medium containing glucose as the sole carbon source and ammonia being the nitrogen source. In this fermentation, biomass is formed with a yield coefficient of 0.35 gram dry cell weight per gram of glucose and acetate is produced with a yield coefficient of 0.1 gram acetate per gram of glucose. The respiratory coefficient for the above culture will be
Match List-I with List-II and select the correct answer by using the codes given below the list:   List-I (Name of Polymer)   List-II (Uses)  (a)  Polystyrene (i) For making combs and computer discs  (b) Polyvinyl Chloride (ii) As insulator, wrapping material and television cabinets  (c) Urea-formaldehyde resin  (iii) Manufacture of raincoats and vinyl flooring  (d) Bakelite (iv)  For making unbreakable cups and laminated sheets
Which of the following option is correct about the uses of Hydrochloric acid? It is used in making plastics like polyvinyl chloride (PVC).  It is used for cleaning iron sheets before tin-plating or galvanization.
Which of the following statements must be false? I. Debaters Y and C are never selected together. II. Debaters Z and B are never selected together . III. Debaters Z and D are never selected together .