Question

19.The substance is commonly called quick lime and used in cement manufacture,is


a. CaCO₃

b. CaO

c. CO₂

d. CO

​

Answer 1

b.CaO

Explanation:

Because it is commonly known as calcium oxide

Answer 2

Answer:

CaO

Explanation:

CaO is known as quick lime and is sometimes used in cement to make a strong building.