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ক্লোরোফ্লুরোকার্বন (CFC) কী নামে পরিচিত?

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RPF Constable (2018) Official Paper (Held On: 02 Feb 2019)
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  1. ক্লোরোকার্বন
  2. ফ্লুরোমিথেন
  3. অ্যানিসোল
  4. ফ্রেয়ন

Answer (Detailed Solution Below)

Option 4 : ফ্রেয়ন
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Detailed Solution

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সঠিক উত্তর ফ্রেয়ন

Key Points

ফ্রেয়ন

  • ফ্রেয়ন হল একটি সাধারণ ফ্লোরিনেটেড আলিফ্যাটিক জৈব যৌগ যা বাণিজ্য ও শিল্পে ব্যবহৃত হয়।
  • ফ্লোরিন এবং কার্বন ছাড়াও, ফ্রেয়নগুলিতে প্রায়শই হাইড্রোজেন, ক্লোরিন বা ব্রোমিন থাকে।
  • সুতরাং, ফ্রেয়ন হল ক্লোরোফ্লুরোকার্বন (CFC), হাইড্রোক্লোরোফ্লুরোকার্বন (HCFC) এবং সম্পর্কিত যৌগগুলির প্রকার।
  • ফ্রেয়ন নামটি ই.আই ডু পোন্ট ডে নেমোরস অ্যান্ড কোম্পানি দ্বারা নিবন্ধিত একটি ট্রেডমার্ক।
  • ফ্রেয়নগুলি হল বর্ণহীন, গন্ধহীন, অদাহ্য, অ-ক্ষয়কারী গ্যাস বা কম বিষাক্ত তরল যা 1930 এর দশকে রেফ্রিজারেন্ট হিসাবে প্রবর্তিত হয়েছিল।
  • তারা অ্যারোসলের জন্য এবং অসংখ্য প্রযুক্তিগত অ্যাপ্লিকেশনের জন্য প্রোপেল্যান্ট হিসাবেও কার্যকর প্রমাণিত হয়েছে।
  • তাদের নিম্ন স্ফুটনাঙ্ক, নিম্ন পৃষ্ঠটান এবং নিম্ন সান্দ্রতা তাদের বিশেষভাবে দরকারী রেফ্রিজারেন্ট করে তোলে।
  • তারা অত্যন্ত স্থিতিশীল, জড় যৌগ।
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