SSC GD 2023 PYQ — Question 40

SSC GD Constable (English) - 1 Feb 2023 - Shift 1 • General Awareness • Q40

Base changes the colour of the red litmus to ______.

Show answer & explanation

Correct answer: A

Explanation

The correct answer is option 1 i.e. blue

A water-soluble combination made of different coloured lichens is called litmus.

  • Filter papers are frequently employed in the production of one of the earliest types of pH indicators, which is used to test materials for acidity.
  • The main purpose of litmus is to identify the acidity or basicity of a solution.
  • Litmus indicator solution turns red in acidic solutions and blue in alkaline ones.
  • This turns solutions that are neutral red.
  • Litmus paper is available in two colours: blue and red.
  • It is generally more dependable.