एका पदार्थाचे दुसऱ्या पदार्थात रूपांतर कसे होऊ शकते?

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RRC Group D Previous Paper 16 (Held On: 1 Nov 2018 Shift 1)
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  1. उष्णता ऊर्जेच्या प्रारणाचे अवशोषण करून
  2. विद्युतअपघटनी वापरून
  3. दाब वाढवून
  4. आम्ल आणि आम्लारी यांचा वापर करून

Answer (Detailed Solution Below)

Option 1 : उष्णता ऊर्जेच्या प्रारणाचे अवशोषण करून
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Detailed Solution

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योग्य उत्तर पर्याय 1 आहे, म्हणजे उष्णता ऊर्जेच्या प्रारणाचे अवशोषण करून.

  • थर्मोडायनामिक्सचा पहिला नियम सांगतो की ऊर्जा निर्माण किंवा नष्ट होऊ शकत नाही.
  • प्रावस्था बदलामध्ये, उष्णता जोडल्याने किंवा उत्सर्जित केल्याने प्रावस्था बदल प्रक्रियेत मदत होते आणि तापमान आणि दाब समान राहतो.
  • प्रावस्था बदल मुख्यत: घन, द्रव आणि वायूच्या 3 टप्प्यांमध्ये होतो आणि संक्रमण हे किरणोत्सर्गाद्वारे होणाऱ्या ऊर्जेच्या देवाणघेवाणीमुळे होते.
  • किरणोत्सर्गाच्या ऊर्जेचे प्रमाण स्टीफन-बोल्ट्झमनच्या नियमानुसार मोजले जाते.
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