NCERT Science

Book: NCERT Science

Chapter: 5. Acids, Bases and Salts

Subject: Chemistry - Class 7th

Q. No. 2 of Exercise

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Ammonia is found in many house-hold products, such as window cleaners. It turns red litmus blue. What is its nature?

The substances that turn red litmus* to blue are basic in nature. Ammonia also turns red litmus to blue. Thus, it is basic in nature.

litmus* : Litmus is a dye that becomes red in acidic conditions and blue under alkaline conditions as shown in the pic below:


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