Hardness of borewell water is less than sea water .jystify?

Ice and Water The phrasing of the question reveals a basic misunderstanding of the term "weight." Here is a famous trick question: Which weighs more, a pound of lead or a pound of feathers? Many people who answer quickly without thinking say the lead weighs more. That is, of course, silly. A pound is a pound is a pound. A pound of lead weighs exactly the same as a pound of feathers. But a pound of lead will occupy far less volume than a pound of feathers because the lead has greater density than the feathers. So let's look at the water-ice comparison. If you had asked, "Does a cubic foot of ice weigh less than a cubic foot of water," we could have answered, "Yes. Because ice is less dense than liquid water, equal volumes of the two substances will have different weights. So, a cubic foot of ice weighs less than a cubic foot of water."