Engineering Sciences
2024 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XE 2024 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 130–132 of 175. Imported answers require review unless explicitly marked reviewed.
Question 130
Open questionXE-FNAT2 marksNeeds review
The dilute solution viscometry data for two samples of a polymer with two different molecular weights are shown in the figure, where
has been plotted against
. Here,
is the specific viscosity and
is the mass concentration of the polymer solution. The slopes and intercepts of the plots for both the samples are shown in the figure. The plotted data for both samples are described by the Huggins equation of dilute solution. The value of the Mark-Houwink constant ‘a’ for both polymer samples is 0.5.
The ratio of the viscosity-average molecular weight (
) of polymer sample 1 to that of polymer sample 2, i.e.,
, is ______ (rounded off to two decimal places). 
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Open questionXE-FNAT2 marksNeeds review
The linear viscoelastic behavior of a polymer is described by the Kelvin-Voigt model consisting of a spring element of elastic modulus 10 MPa in parallel with a dashpot of viscosity 3.6 × 10
Pa s. A fixed stress of 40 MPa is suddenly applied to the polymer and maintained thereafter. The value of the strain after one hour from the sudden application of the stress is ______ (rounded 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 answerQuestion 132
Open questionXE-GMCQ1 markNeeds review
Which one of the following fungi produces aflatoxins?
Your answerChoose one option.
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