Assertion (A) : Cellulosic textiles can be permanently heat set.
Reason (R) : Heat setting can be performed on thermoplastic polymers which when heated under strictly controlled temperatures soften and can be made to take any shape. When cooled, they will retain the desired shape or configuration.
In the light of the above statements, choose the most appropriate answer from the options given below :
Assertion (A) Analysis: Cellulosic Textiles Heat Setting
Assertion (A) claims that cellulosic textiles can be permanently heat set. Cellulosic textiles are made from cellulose, a natural polymer. This material is not thermoplastic. The process of permanent heat setting, as described for thermoplastics, is not applicable to cellulosic fibers in the same way. Therefore, Assertion (A) is incorrect.
Reason (R) Analysis: Thermoplastic Polymers and Heat Setting
Reason (R) accurately describes the principle of heat setting for thermoplastic polymers. These materials soften upon heating to specific temperatures and can be molded into new shapes. Upon cooling, they retain the set shape. This property is fundamental to how thermoplastic polymers behave and are processed.
Conclusion: Assertion and Reason Validity
The analysis shows:
- Assertion (A) is incorrect.
- Reason (R) is correct.
Thus, the correct choice is that (A) is not correct, but (R) is correct.
Important Questions from Miscellaneous
- Which of the following scheduler/schedulers is/are also called CPU scheduler ?
(A). Short Term Scheduler
(B). Long Term Scheduler
(C). Medium Term Scheduler
(D). Asymmetric Scheduler
Choose the correct answer from the options given below: - A situation where two or more processes are blocked, waiting for resources held by each other is called:
- External fragmentation occurs ________.
- Which disk scheduling algorithm looks for the track closest to the current head position?
- Which CPU scheduling algorithm prefers the process with the shortest burst time?
