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by Excellent Pro (38.3k points)  
রসায়নহলো বিজ্ঞানের একটি শাখা যা পদার্থের গঠন, ধর্ম, সংযুক্তি ও রূপান্তর নিয়ে গবেষণা করে। সহজ ভাষায়, এটি পরমাণু, অণু ও রাসায়নিক বিক্রিয়া নিয়ে কাজ করে।

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