आंशिक आसवन
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(aangrezi: Fractional distillation) rasayan vijnan mean aanshik asavan vidhi se vaise mishrit dravoan ko alag karate haian, jisamean kvathanaankoan mean antar bahut kam hota hai. khanij tel ya kachche tel mean se shuddh dizal, petrol, mitti tel, kolatar adi isi vidhi dvara alag kiya jata hai.
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