Question

How do we convert milk into curd and what type of change is it?

Answer 1

Milk can be converted to curd by the process of fermentation. ....or more addition lactobacillius bacteria.....Thus it is totally a chemical change.....

Answer 2

Milk is converted into curd or yogurt by the process of fermentation. Milk consists of globular proteins called casein. The curd forms because of the chemical reaction between the lactic acid bacteria and casein. 

hope it helps.