pH values of certain substances are given.
A=1, B=6, C=7, D=9, E=14
a) Which of these is the strongest alkali?
b) One among these potassium chloride solution. Identify.
c) Give any two properties of compounds belonging to the category of 'A'.
d) Name a substance commonly added to soil when the pH of the soil decreases.

Explanation

a) E
b) C
c) Sour taste Blue litmus turns red.
d) Slaked lime