JEE Chemistry
Entropy & Spontaneity: JEE Questions & Solutions
6 previous-year JEE Chemistry questions on Entropy & Spontaneity, each with a worked step-by-step solution.
Previous-year questions
- 01Ice at -5^° C is heated to become vapor with temperature of 110^° C at atmospheric pressure. The entropy change associated with this…MCQMediumJEE 2025
- 02The effect of temperature on the spontaneity of reactions are represented as: | | Δ H | Δ S | Temperature | Spontaneity |…MCQMediumJEE 2025
- 03Let us consider an endothermic reaction which is non-spontaneous at the freezing point of water. However, the reaction is spontaneous at…MCQEasyJEE 2025
- 04Standard entropies of X₂, Y₂ and XY₅ are 70 J K⁻¹ mol⁻¹, 50 J K⁻¹ mol⁻¹, and 110 J K⁻¹ mol⁻¹ respectively. The temperature in Kelvin at…NVAEasyJEE 2025
- 05Which of the following relations are correct? (A) Δ U = q + pΔ V (B) G = H - TS (C) Δ S = q_rev/T (D) Δ H = Δ U - Δ n R T Choose the most…MCQEasyJEE 2023
- 0630.4 kJ of heat is required to melt one mole of sodium chloride and the entropy change at the melting point is 28.4 J K⁻¹ mol⁻¹ at 1 atm.…NVAEasyJEE 2023
Frequently asked questions
Our bank has 6 previous-year JEE Chemistry questions tagged to Entropy & Spontaneity, drawn from JEE papers between 2023 and 2025, including 4 from 2025 alone. Each comes with a full step-by-step solution.
Entropy & Spontaneity is rated Advanced overall for JEE Chemistry. The PYQs on this page break down as 4 easy, 2 medium.
Of the 6 previous-year questions on Entropy & Spontaneity, 4 are multiple-choice (MCQ) and 2 are numerical-value (NVA) questions.
Based on recent paper analysis, Entropy & Spontaneity is worth about 1 mark in JEE Main. It sits in Chemical Thermodynamics, a Class 11 Chemistry chapter.
More Chemical Thermodynamics topics
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