Zubeda while performing food test used iodine solution witha dropper to test the presence of iodine and them she dipped.the same dropper in conc.
hydrochloric acid for testing adulteration in dal. her teacher instructed her to either wash the dropper or use separate dropper.This is because:
A.Dropper might break in acidic solution
B.it might contaminate hydrochloric acid
C.iodine solution might turn the acid blue black
D. There were many droppers available