A small amount remaining after the main part has been taken or has been dealt with.

An amount of a substance that remains after processing or extraction.

प्रक्रियाकरण या निकालने के बाद बची हुई मात्रा

English Usage: The residual gas from the plant was collected for further use.

Hindi Usage: संयंत्र से बची हुई गैस को आगे के उपयोग के लिए एकत्र किया गया।