Textile Engineering > GATE 2018 > Synthetic Fibres
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].
[a]: The reaction temperature and rate of agitation during polymerization of polyethylene terephthalate have an important effect on molecular weight of the polymer produced.
[r]: Polymerization of polyester by melt polycondensation is a predominantly diffusion controlled process.
[a]: The reaction temperature and rate of agitation during polymerization of polyethylene terephthalate have an important effect on molecular weight of the polymer produced.
[r]: Polymerization of polyester by melt polycondensation is a predominantly diffusion controlled process.
Correct : a
Similar Questions
If the density of 100% crystalline polyethylene is 1000 kg⋅m⁻³ and that of 100% amorphous polyethylene is 865 kg⋅m⁻³, what is the mass fractional crystallinity...
If the density of 100% crystalline polyethylene is 1000 kg⋅m⁻³ and that of 100% amorphous polyethylene is 865 kg⋅m⁻³, what is the mass fractional crystallinity...
If the density of 100% crystalline polyethylene is 1000 kg⋅m⁻³ and that of 100% amorphous polyethylene is 865 kg⋅m⁻³, what is the mass fractional crystallinity...
Total Unique Visitors
Loading......