TNUSRB SI Science Class In Tamil 2024 | 9th Std Science | TNUSRB Science Important Questions #16

[@ManonmaniBalakumar]

Railways ku science pyq series start pannunga sir. We need your class.

[@S.SujithaJesus-jh9vd]

Thank you sir

[@vijayanpc1794]

❤

[@hemkumar-xx4ov]

Mercaptan

[@tamilwhatsappstatus5769]

LPG SMELL -MERCAPTAN