Hard water contain
ACalcium
BMagnesium bicarbonates
CMagnesium bicarbonates
DAll the above
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
action causes holding the mouse over an icon without clicking bring up a short
explanation of the function of the icon
When the length of any chord of a curve is less than peg interval it is known as
When a cone is cut off by a plane inclined to its base, but not passing through base, and the portion obtained after removing the part containing the apex is:
When the vertical circle of a theodolite is on the right side of the observer, the position is
In prismatic compass the graduations are marked such that zero is at