26. ऊर्ध्वपातन के उदाहरण निम्न में से कौन हैं ?
(A) आयोडीन (B) अमोनियम क्लोराइड (C) शुष्क बर्फ (D) उप
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Answer:
B
Explanation:
Jab koi matter solid se sedhe gas me badal jata hai or Phir gas se sedhe solid me badal jata hai to esi parkriya ko urdhpatan kahte hai
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