white
pink
red
blue
Correct answer is B
Blue anhydrous cobalt (II) chloride changes to pink in water
If an element R belongs to the same group as sodium, an aqueous solution of ROH will ...
Which of the following features of a human skeleton can be determined by carbon-dating? ...
Why is water often referred to as the "universal solvent"? ...
Which statement is NOT true about the composition of starch? ...
Determine the volume of 0.100 mol of HCl in 0.250moldm3 of solution....
The vapour density of an organic compound with the molecular formula C2H4O2, is [H=1.0, C=12...