Chemical Engineering
2026 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE CH 2026 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 13–15 of 65. Imported answers require review unless explicitly marked reviewed.
Question 13
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A body is placed inside a perfectly black enclosure and is allowed to reach thermal equilibrium. According to the Kirchhoff’s identity, which one of the following is equal to the emissivity of the body at a given wavelength?
Your answerChoose one option.
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Which one of the following ratios does a Gashof number represent?
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Consider a closed system of one mole of an ideal gas undergoing a polytropic process. The process follows
, where P is the pressure, V is the volume and n is a constant. If the process is isobaric, which one of the following is the value of n?Your answerChoose one option.
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