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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 हिन्दी MCQ

Q23.25°C पर अभिक्रिया C₂H₄(g) + H₂(g) → C₂H₆(g) की एन्थैल्पी की गणना कीजिए। 25°C पर इथीन, हाइड्रोजन तथा इथेन की दहन ऊष्माएँ क्रमशः −337.0 kcal, −68.4 kcal तथा −373.0 kcal हैं।