Blue litmus is turned red by an acidic solution
acid=change the colour of litmas paper to blue into red base=change the colour of litmas paperto red into blue
i think it will turn blue if the litimas paper is red
It will become red !
When Fehling's solution is added to an aldehyde it turns brick red
Yellow
it turns red
Blue
turns blue
it turns red[first it was purple
it turns greenish yellow if it is added to a base
it turns red[first it was purple
It turns from its original blue colour to red.