Thermometry & Calorimetry JEE Main PYQs PDF, 2020–2026

Thermometry & Calorimetry questions per year

Topic-wise weightage by year

How many Thermometry & Calorimetry questions each topic had in every JEE Main year (all shifts), counting every question asked, including ones not in the PDF. Darker cells mean more questions.

Swipe the table sideways for older years.

Newest questions (2026)

All 6 JEE Main 2026 Thermometry & Calorimetry questions in the free PDF, latest shift first.

1. JEE Main 2026 · 5 Apr · Shift 2 · Specific and Latent Heat

   The heat extracted out of $x$ gram of water initially at ${50}^{{\circ}}{\mathrm{C}}$ to $\mathrm{cool}$ it down to $0^{{\circ}}{\mathrm{C}}$ is sufficient to evaporate $(1000-x)$ gram of water also initially at ${50}^{{\circ}}{\mathrm{C}}$. The value of $x$ (closest integer) is $\_\_\_\_$ .

   (Take latent heat of water $2256{\ \mathrm{kJ}}/{\mathrm{kg}}.{\mathrm{K}}$, specific heat capacity of water $4200{\ \mathrm{J}}/{\mathrm{kg}}.{\mathrm{K}}$ )

   Solve it online →

2. JEE Main 2026 · 4 Apr · Shift 2 · Thermal Expansion

   The temperature of a metal strip having coefficient of linear expansion $\alpha$ is increased from $T_{1}$ to $T_{2}$ resulting in increase of its length by $\Delta L_{1}$. The temperature is further increased from $T_{2}$ to $T_{3}$ such that the increase in its length is $\Delta L_{2}$.

   Given $T_{3}+T_{1}=2T_{2}$ and $T_{2}-T_{1}=\Delta T$, the value of $\Delta L_{2}$ is $\_\_\_\_$ .

   Solve it online →

3. JEE Main 2026 · 28 Jan · Shift 1 · Specific and Latent Heat

   Which of the following best represents the temperature versus heat supplied graph for water, in the range of $-{20}^{{\circ}}{\mathrm{C}}$ to ${120}^{{\circ}}{\mathrm{C}}$?

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4. JEE Main 2026 · 28 Jan · Shift 1 · Calorimetry

   10 kg of ice at $-{10}^{{\circ}}{\mathrm{C}}$ is added to 100 kg of water to lower its temperature from 25 ${}^{{\circ}}{\mathrm{C}}$. Consider no heat exchange to surroundings. The decrement to the temperature of water is $\_\_\_\_$ ${}^{{\circ}}{\mathrm{C}}$.

   (specific heat of ice $=2100{\ \mathrm{J}}/{\mathrm{Kg}}.{}^{{\circ}}{\mathrm{C}}$, specific heat of water $=4200{\ \mathrm{J}}/{\mathrm{Kg}}.{}^{{\circ}}{\mathrm{C}}$, latent heat of fusion of ice $=3.36\times {10}^{5}{\ \mathrm{J}}/{\mathrm{Kg}}$ )

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5. JEE Main 2026 · 21 Jan · Shift 1 · Thermal Expansion

   An aluminium and steel rods having same lengths and cross-sections are joined to make total length of 120 cm at ${30}^{{\circ}}{\mathrm{C}}$. The coefficient of linear expansion of aluminium and steel are $24\times {10}^{{-6}}/{}^{{\circ}}{\mathrm{C}}$ and $1.2\times {10}^{{-5}}/{}^{{\circ}}{\mathrm{C}}$, respectively. The length of this composite rod when its temperature is raised to ${100}^{{\circ}}{\mathrm{C}}$, is $\_\_\_\_$ cm.

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6. JEE Main 2026 · 21 Jan · Shift 1 · Calorimetry

   A gas based geyser heats water flowing at the rate of 5.0 litres per minute from ${27}^{{\circ}}{\mathrm{C}}$ to ${87}^{{\circ}}{\mathrm{C}}$. The rate of consumption of the gas is $\_\_\_\_$ ${\mathrm{g}}/{\mathrm{s}}$.

   (Take heat of combustion of gas $=5.0\times {10}^{4}{\ \mathrm{J}}/{\mathrm{g}}$ ) specific heat capacity of water $=4200{\ \mathrm{J}}/{\mathrm{kg}}\cdot {}^{{\circ}}{\mathrm{C}}$

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Practise the 2026 Thermometry & Calorimetry questions online

Sample questions from recent papers

The free PDF above has all 48 questions grouped by topic, with an answer key.

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