Question

The thermo-plastic glues are permanent once they are set.

(a) True

(b) False

This question was addressed to me in an interview for job.

Asked question is from Miscellaneous Materials in chapter Miscellaneous Materials, Plain and Reinforced Cement Concrete of Construction & Building Materials

Answer 1

Right choice is (b) False

To elaborate: Glues from synthetic resins can be either thermo-plastic glues or thermo-setting glues. The thermo-plastic glues, on reheating, can be made plastic again while the thermo-setting glues are permanent once they are set.