Question

plz answer this question urgnt

Answer 1

$<b>As we know that$
Colour no above 7
= acidic
Colour bellow 7
= basic

Then in case of

A : colour = red = pH scale 0
=> acidic

B: colour = blue = pH scale 14
=> basic

C : colour = green = pH scale 12
=> basic

D: colour = orange = pH scale 4
=> basic

${\mathfrak{Hope\:it\: helps}}$