Spring water
River water
Tap water
Sea water
Correct answer is C
Tap water contains less Ca2+ and Mg2+
Electropositivity of elements across the periodic table normally ...
The phenomenon observed when dust particles collide randomly in a beam of sunlight is known as? ...
Which of the following metals burn with brick red flame? ...
The relative molar mass of a gaseous hydrocarbon is 30. Determine its vapour density. ...
Which of the following CANNOT be obtained by fractional distillation of petroleum? ...
In solution, aminoethanoic acid (glycine) can be represented as NH+3 CH2COO. This implies that it...