JEE Main 2021 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 3 August 2021, Shift 1, Physics Q22

Question 22 of 90 in this shift, Physics question 22 of 30, Section B.

A steam engine intakes 80

g

steam at 100°C per minute and cools it down to 30°C. The heat energy consumed by the steam engine per minute is _________

Cal

. (Latent heat of vaporization of steam = 540

Cal/g

)

Official answer

48800

NTA final key.

Chapter: Thermal Properties of Matter
Topic: Calorimetry
Idea tested: Latent Heat and Phase Change

Same idea in other shifts

Asked 4× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.