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SCHOOL LECTURER (SCHOOL EDU.) 2025 2026 question with answer

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Question 23
Question Paper for Lecturer and Coach (School Edu. Dept.) - Comp. Exam-2025 (Chemistry) Rajasthan English MCQ

Q23.Calculate the enthalpy of the following reaction at 25°C — C₂H₄(g) + H₂(g) → C₂H₆(g). The heats of combustion of ethene, hydrogen and ethane are −337.0 kcal, −68.4 kcal and −373.0 kcal respectively at 25°C

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