FOOD TECHNOLOGY

Detailed explanation-1: -The simple definition of water hardness is the amount of dissolved calcium and magnesium in the water. Hard water is high in dissolved minerals, largely calcium and magnesium. You may have felt the effects of hard water, literally, the last time you washed your hands.

Detailed explanation-2: -Hard water is water with an abundance of mineral content, specifically calcium and magnesium. This mineral-rich water causes devastating effects on household appliances. Water hardness minerals resist dissolution and seek to return to a hardened form.

Detailed explanation-3: -Hard water contains dissolved magnesium ions (Mg 2+) and calcium ions (Ca 2+), which can get into the water when it comes into contact with limestone and other rocks that contain calcium compounds . This can happen, for example, when rainwater flows over rocks on its way to a reservoir.

Detailed explanation-4: -hard water, water that contains salts of calcium and magnesium principally as bicarbonates, chlorides, and sulfates.