Engineering Sciences
GATE XE branch:xe PYQs
Build your understanding with focused practice from past exam papers.
Questions 481–490 of 1772. Imported answers require independent review unless marked reviewed.
Question 109
Open questionXE-ENAT2 marksNeeds review
A piston-cylinder system contains 2 kg of wet steam at 90 °C with quality of 0.1. The piston is loaded with a linear spring. The steam is heated to 800 kPa and 250 °C on heating. The work done (in kJ) in this process is ______ (rounded off to two decimal places).
Use the following data:
At 90 °C:
kPa,
m³/kg,
m³/kgAt 250 °C and 800 kPa:
m³/kgLog 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 110
Open questionXE-FMCQ1 markNeeds review
Phenol-formaldehyde resin is prepared by
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 111
Open questionXE-FMCQ1 markNeeds review
Melting phenomenon in a semi-crystalline polymer is a ________ order phase transition.
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 112
Open questionXE-FMCQ1 markNeeds review
A certain polymer synthesised in the laboratory shows that all the chains have same number of repeat units (i.e., same degree of polymerization). The relationship between weight-average (
), number-average (
), and z-average (
) molecular weights for this polymer can be expressed asYour answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 113
Open questionXE-FMCQ1 markNeeds review
Nitrile rubber is the copolymer of
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 114
Open questionXE-FMCQ1 markNeeds review
A suitable physical compatibilizer of a binary blend of poly(ethylene) and poly(propylene) is ______.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 115
Open questionXE-FMCQ1 markNeeds review
The ‘die swell’ phenomenon exhibited by a polymer melt is due to
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 116
Open questionXE-FMCQ1 markNeeds review
Thermoforming operation of semi-crystalline polymers with glass transition temperature,
, and melting temperature,
, is carried out at a temperature
, in the range ofYour answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 117
Open questionXE-FMCQ1 markNeeds review
Feedstock recycling of poly(ethylene terephthalate) is carried out by
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 118
Open questionXE-FMSQ1 markNeeds review
Which of the following polymers is/are synthesized by ring opening polymerization?
Your answerSelect all correct options. You can choose more than one.
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