Question

The two colors seen at the two extreme ends of the pH chart are:

• A. red and violet
• B. red and green
• C. green and blue
• D. orange and green

Answer 1

The correct option is A

red and violet

Explanation for the correct option:

(A) red and violet

1. The pH scale ranges from 0 to 14, with 0 being acidic and 14 being basic.
2. The color red represents acidic pH, while violet represents basic and alkaline pH.

Explanation for incorrect option(s):

(B) red and green

Green is the color for neutral solutions having a pH of around 7.

(C) green and blue

The pH paper starts from acidic pH which is red in color and ends at basic pH which is violet in color and not green in color.

(D) orange and green

Orange indicates a less acidic pH while green indicates a neutral pH.

Hence, the correct answer is an option (A).