Question

Which among the following tests are used to check the acidity or alkalinity of soil?

• A. Blue litmus test
• B. Red litmus test
• C. Black litmus test
• D. Orange litmus test

Answer 1

Answer: (A), (B)

The correct options are
A Blue litmus test
B Red litmus test

For testing whether the soil is acidic or alkaline in nature, red and blue litmus paper are used. If the sample soil is basic or alkaline the red litmus paper turns blue and if it is acidic, blue litmus paper turns red.