A pure crystalline substance , on being heated gradually , first forms a turbid lokking liquid and then the turbidity completely disappears. This behaviour is the characteristic of substances forming A pure crystalline substance first forms a turbid lokking liquid and then the turbidity completely disappears. This behaviour is the characteristic of substances forming on being heated gradually February 8, 2021 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related