Question

What is chuna called in english which is used in white washing?

Answer 1

Answer:

Calcium oxide (CaO)

Explanation:

Chuna is called Quick lime in english.

The chemical name of Quick lime is Calcium oxide, having chemical formula CaO.

Quicklime is used for whitewashing as it produces calcium hydroxide (CaOH) when it reacts with water-

CaO (s) + H2O (l) ---- Ca(OH)2 (aq)

RESULT: Chuna is called Quick lime i.e., Calcium oxide which is used for white washing.

Answer 2

Chuna is called quicklime in english that is used in white washing:

Explanation:

• Chuna produces calcium hydroxide while it reacts with water and it absorbs carbon dioxide from the environment therefore quicklime is used for whitewashing .
• As the result ,it produces calcium carbonate (CaCO3) which creates a hard coating at the walls

Answer- Quicklime.