Question

A student was given four unknown colorless samples labeled A, D
D asked to test their Ph by using pH paper, he observed that the colou
pH paper turned to Red, Blue, Green and Orange respectively when dipped
in four solutions. The correct conclusion made by student would be that:
a. I, II, and III are acidic
b. I and IV are acidic
c. II, III IV are basic
d. II and IV are basic​

Answer 1

Answer:

b) I and IV

Explanation:

The Colour of Acid on pH Paper is Red,Orange and Yellow