Engineering Sciences
2019 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XE 2019 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 124–126 of 175. Imported answers require review unless explicitly marked reviewed.
Question 15
Open questionXE-FMCQ2 marksNeeds review
Match the material classification in Column A with the appropriate one in Column B: (PS=polystyrene, PPO=polyphenylene oxide, PDMS=poly(dimethyl siloxane), PP=polypropylene, PE=polyethylene, PP-g-MA=maleic anhydride grafted PP)
Column A
P. Miscible blend
Q. Immiscible blend
R. Compatibilized blend
S. Polymer composite
Column B
PDMS + fumed silica
Nylon 6 + PP-g-MA + PP
PS + PPO
PE + PP
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 16
Open questionXE-FNAT2 marksNeeds review
A linear amorphous polymer has a T_g of +10 °C. At 28 °C, it has a melt viscosity of 4 × 10⁸ poise. The viscosity of the polymer at its T_g is ______ × 10¹³ poise (round off to one decimal place).
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 17
Open questionXE-FNAT2 marksNeeds review
A polypropylene (PP) bar with a 10 mm × 10 mm square section is 225 mm long. The modulus of PP bar is 861 MN m⁻². It is pinned at both ends and an axial compressive load of 140 N is applied. The strain due to the applied load experienced by the PP bar is ____ % (round off to two decimal places).
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer