Question

Name one indicator which turns red on adding a base

Answer 1

A blue litmus paper

Answer 2

The name of the indicator which turns red on adding a base is turmeric paper.

• A medium that changes its shade when in contact with acid or base is called an indicator.
• The color of the turmeric paper is yellow.
• When the turmeric paper comes in contact with an alkaline solution, it turns red.
• On the other hand, when the turmeric paper comes in contact with an acidic solution, it does not change its color.
• Some other examples of indicators are litmus paper, phenolphthalein, etc.