Question

What is litmus?
a.) Water soluble mixture of different dyes.
b.) Mixture of metal and non-metal ions
c.) Both A and B
d.) None of these

Answer 1

Hint: Whenever such types of questions appear, try to explain about the properties, the purpose of the given material. As mentioned in the solution, the litmus is used as a universal pH indicator and tells about acidity and alkalinity of the materials.

Complete step by step answer:
 Litmus is a colouring matter obtained from lichens that turns red in acid solutions and blue in basic/ alkaline solutions. It is a water-soluble mixture of different dyes. It is a weak organic compound and is used as a universal pH indicator in the form of litmus papers.
Now, let us know more about litmus paper, litmus paper is a filter paper. It is formed by the absorption of litmus solution. This piece of paper gives us the result about the acidity and basicity of a given compound.
So, as mentioned above, the litmus is a mixture of different types of dyes.
So, the correct answer is “Option A”.

Note: The Litmus solution is essentially a purple color. This solution is here to utilize the separation among acids and bases. At the point when acid is added to the litmus solution, it changes to red and when base is included, it changes to blue. Litmus solution is separated from lichens. Lichens are plants having a place with the Thallophyta gathering.