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

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Question 139

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

Q139.निम्न अभिक्रिया पर विचार कीजिए — Na(s) → Na(g); ΔₛH° = 108.4 kJ mol⁻¹। सोडियम धातु के लिए ऊर्ध्वपातन एन्थैल्पी क्या होगी?