Question

Short answer Milk get curdled when curd is added to it give reason

Answer 1

Answer:

Because the curd contains lactobacillus bacteria which convert lactose into lactic acid and as a result casein coagulates to form curd. Because the curd contains lactobacillus bacteria which convert lactose into lactic acid and as a result casein coagulates to form curd

Explanation:

Answer 2

Answer:

Lactobacillus

Explanation:

Milk contains a bacteria called LACTOBACILLUS which when curd is added to milk, it reacts and Lactobacillus turn milk to curd.✊