JEE Main Physics · Thermal Properties of Matter

Evaporative Cooling Fraction

Evaporative Cooling Fraction (Thermal Properties of Matter) was asked once in the 42 JEE Main shifts Lumi analysed, in 2026. 1 of the 1 had a numerical answer.

Times asked: 1; in 1 shift
Years: 2026
Usual format: Numerical value; Calculation
Pattern: New since 2024; asked once so far

How it is asked

Mass split between cooling and evaporation

Difficulty

Easy 0Medium 1Hard 0

Where it sits

Chapter: Thermal Properties of Matter. Topic: Calorimetry, 6 questions over 5 ideas.

The question

Newest first, each with its options and official answer.

5 Apr 2026, Shift 2 · Q47The 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 $(1000-x)$ …MediumNumerical value