JEE Main 2026 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 5 April 2026, Shift 2, Physics Q47

Question 47 of 75 in this shift, Physics question 22 of 25, Section B.

The heat extracted out of

x

gram of water initially at 50

^\circ

C to cool it down to 0

^\circ

C is sufficient to evaporate

(1000-x)

gram of water also initially at 50

^\circ

C. The value of

x

(closest integer ) is ________. (Take latent heat of water 2256 kJ/kg. K, specific heat capacity of water 4200 J/kg. K)

Official answer

922

NTA final key.

Chapter: Thermal Properties of Matter
Topic: Calorimetry
Idea tested: Evaporative Cooling Fraction

Same topic in other shifts

All Calorimetry questions

3 Apr 2025, Shift 1 · Q33During the melting of a slab of ice at 273 K at atmospheric pressure:MediumSingle correct
8 Apr 2025, Shift 2 · Q32Water falls from a height of 200 m into a pool. Calculate the rise in temperature of the water assuming no heat dissipation from the water…EasySingle correct
30 Jan 2024, Shift 2 · Q37A block of ice at $-10^\circ C$ is slowly heated and converted to steam at $100^\circ C$ . Which of the following curves represent the…EasyDiagram basedHas a figure
25 Jul 2021, Shift 1 · Q14Two different metal bodies A and B of equal mass are heated at a uniform rate under similar conditions. The variation of temperature of…MediumSingle correctHas a figure
2 Apr 2017 (offline) · Q8A copper ball of mass 100 gm is at a temperature T. It is dropped in a copper calorimeter of mass 100 gm, filled with 170 gm of water at…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 42 of the 174 JEE Main shifts held from 2017 to 2026.