JEE Main 2022 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 25 June 2022, Shift 1, Physics Q54

Question 54 of 90 in this shift, Physics question 24 of 30, Section B.

A steam engine intakes 50 g of steam at

100^\circ

C per minute and cools it down to

20^\circ

C. If latent heat of vaporization of steam is 540 cal

\mathrm{g^{-1}}

, then the heat rejected by the steam engine per minute is __________

\times10^3

cal. (Given : specific heat capacity of water : 1 cal

\mathrm{g^{-1}\,{}^\circ C^{-1}}

)

Official answer

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

25 Jun 2022, Shift 2 · Q35A copper block of mass 5.0 kg is heated to a temperature of $500^\circ\mathrm{C}$ and is placed on a large ice block. What is the maximum…EasySingle correct
3 Aug 2021, Shift 1 · Q22A 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…EasyNumerical value
4 Sep 2020, Shift 1 · Q7The specific heat of water = 4200 J kg $^{-1}$ K $^{-1}$ and the latent heat of ice = $3.4\times10^5$ J kg $^{-1}$ . 100 grams of ice at 0°C is…EasySingle correct

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.