NDA General Science Chemistry Questions Part 2

Quicklime reacts with aqueous solution of Hydrochloric Acid gives Calcium Chloride and water.
- However, carbon dioxide is not released.
- The reaction is an example of an exothermic reaction which doesn't release Carbon dioxide.
- Marble, Limestone and Chalk are all types of Calcium Carbonate which when reacted with Hydrochloric acid release Carbon dioxide.
- CaO+dil. 2HCl→CaCl2+H2O