Question

7. Hardness of water is due to the presence of​

Answer 1

Answer:

Water hardness is due to the presence of calcium ions, and to a lesser extent, magnesium, iron, and manganese. Water of medium hardness (less than about 150 mg/kg as calcium carbonate) is desirable for steamed bread production as some of the mineral salts have a strengthening effect on gluten and stimulate yeast.

Answer 2

Answer:

calcium and magnesium salts