Correct option is C
Sol: The correct answer is (c) basic
Key points:
- Washing soda, also known as sodium carbonate (), is basic in nature.
- Washing soda is a salt formed from the neutralization of carbonic acid () with sodium hydroxide (NaOH).
- It has a pH greater than 7, indicating that it is alkaline or basic in nature.
All Other option:
Sour:
- Substances that are sour in nature are typically acids. Examples include lemon juice and vinegar.
- Washing soda is not sour; it has a basic nature and is often used in cleaning products to neutralize acids.
Acidic:
- Acidic substances have a pH less than 7 and can turn blue litmus paper red.
- Washing soda, being sodium carbonate (), has a pH greater than 7 and is, therefore, basic, not acidic.
Edible:
- Edible substances are safe to consume. Common examples include table salt, sugar, and flour.
- Washing soda is not edible as it is a strong alkali and can be harmful if ingested. It is primarily used for cleaning and laundry purposes.