Blue colored solution is given in the figure . which solution is it ?

1.	Blue colored solution is given in the figure . which solution is it ? What causes the colour in thid solution. Explain it is urgent pls
Answer» n't KNOW bro seriously but I MUST FIND this ANSWER

Blue colored solution is given in the figure . which solution is it ? What causes the colour in thid solution. Explain it is urgent pls

Answer»

n't KNOW bro

seriously