Spring water
River water
Tap water
Sea water
Correct answer is C
Tap water contains less Ca2+ and Mg2+
Dehydration of ethanol produces ...
Which of the following acids from normal salt only? ...
What is the atomic number of Cadmium? ...
Which of the following pairs of properties of alkali metals decreases down the group? ...
If humid air is polluted by chlorine discharged, the air can be restored by sprinkling ...
Consider the following reaction represented by the following equation: C2H2 \(^{H\(_...