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Calorimetry and Phase Change for JEE: 8 solved questions

Real JEE paper questions on calorimetry and phase change, part of thermodynamics. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2011 to 2026. No sign-in needed to read them.

What this topic asks

• Latent Heat and Internal Energy — 5 questions
• Heating a Liquid — 3 questions

All 8 questions with solutions

• The densities of water at 4°C and 20°C are 1000 kg/m³ and 998 kg/m³ respectively. The increase in internal en… JEE Main 24th Jan 1st Shift 2026
• During the melting of a slab of ice at 273 K at atmospheric pressure, JEE Main 3rd April 1st Shift 2025
• 1 kg of water at 100°C is converted into steam at 100°C by boiling at atmospheric pressure. The volume of the… JEE Main 11th April 1st Shift 2023
• 1 g of a liquid is converted to vapour at a pressure of 3×10⁵ Pa. If 10% of the heat supplied is used to incr… JEE Main 24th Jan 1st Shift 2023
• A thermally insulated vessel contains 150 g of water at 0°C. The air in the vessel is then pumped out adiabat… JEE Main 8th April 1st Shift 2019
• 200 g of water is heated from 40°C to 60°C. Ignoring the slight expansion of the water, the change in its int… JEE Main 2016
• Given that 1 g of water in the liquid phase has a volume of 1 cm³ and in the vapour phase 1671 cm³ at atmosph… JEE Main 2013
• 100 g of water is heated from 30°C to 50°C. Ignoring the slight expansion of the water, the change in its int… JEE Main 2011