Engineering Sciences
2025 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XE 2025 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 64–66 of 175. Imported answers require review unless explicitly marked reviewed.
Question 64
Open questionXE-CNAT2 marksNeeds review
At 873 K, hydrogen diffuses under steady state condition through a 5 mm thick palladium sheet with a cross-sectional area of 0.3 m
. The concentrations of hydrogen at high and low pressure ends of the sheet are 3 kg m
and 0.5 kg m
, respectively. The amount of hydrogen (in kg per day) passing through the sheet is (rounded off to two decimal places) ____________Given: At 873 K, diffusivity of hydrogen =
m
s
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Open questionXE-CNAT2 marksNeeds review
Corrosion of pure iron takes place in an acidic electrolyte by forming Fe
ions at ambient condition. The corrosion current density is measured to be
A cm
. The corrosion rate (in mm per year) of iron is (rounded off to one decimal place) ____________Given: Atomic weight of iron = 55.85
Density of iron = 7.86 g cm
Consider 365 days in a year
1 Farad = 96500 Coulomb mol
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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 66
Open questionXE-DMCQ1 markNeeds review
Consider a spring-mass system with mass m and spring stiffness k as shown in the illustration. At time t=0, the mass is displaced by P units and the velocity of the mass is zero. The displacement of the mass, x(t), is measured from the equilibrium position.
Which one of the following functions represent x(t)?
Your answerChoose one option.
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