https://hihindi.com/%e0%a4%aa%e0%a4%a6%e0%a4%be%e0%a4%b0%e0%a5%8d%e0%a4%a5-%e0%a4%95%e0%a5%87-%e0%a4%b8%e0%a4%be%e0%a4%ae%e0%a4%be%e0%a4%a8%e0%a5%8d%e0%a4%af-%e0%a4%97%e0%a5%81%e0%a4%a3-general-properties-definition/
पदार्थ क्या है अवस्था, गुण | General Properties & Definition Of Matter In Hindi