Chemistry
Grade-8
Easy
Question
Read the following paragraph and answer the following question.
When sulphuric acid reacts with carbonates, a salt like ferrous sulphate, water and CO2are formed as products. The carbon dioxide causes bubbling during the reaction.
The property, in which formation of gas bubbles in the liquid takes place during the above chemical reactions is called as
- Evaporation
- Effervescence
- Crystallization
- Condensation
Hint:
The synonym is froth or fizz.
The correct answer is: Effervescence
- Effervescence is the release of gas from an aqueous solution and the foaming or bubbling resulting from this release.
- The word frothy comes from the Latin verb fervere, preceded by the adverb ex. It has the same root as the word fermentation.
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