Question

The pH of soil X is 7.5 while that of soil Y is 4.5. Which of the two soils, should be treated with powdered chalk to adjust its pH?

(a) X only

(b) Y only

(c) Both X and Y

(d) none of these​

Answer 1

Answer:

(b) y only

Explanation:

because the chalk is composed of mineral calcite. Calcite is calcium carbonate or CaCO3. The pH of CaCO3 is considered as 9.1 (basic). So, generally chalk powder is considered as basic compound used to raise the pH of soil

ph of soil x is already a base it's pH is greater than 7

but pH of soil y is 4.5 which is actually acidic in nature to adjust it's pH powdered chalk must be treated

Answer 2

Answer:

b is the correct answer