Question

Four solutions I, II, Ill and IV were given to a student to test their acidic or basic nature using pH paper. He observed that the colour of pH paper turned to Red, Blue, Green and Orange respectively when dipped in these four solutions. The correct conclusion of this observation would be :
(A) I,11, M are acidic (B)I and IV are acidic
(C) B, M and IV are basic (D) II and IV are basic


CBSE Class X Science VSA (1 Mark)

Answer 1

(B)  Red and orange colour of pH paper indicates that I and IV are acidic.