Question

Cements, the important building material is a mixture of oxides of several elements. Besides calcium, iron and sulphur, oxides of elements of which of the group (s) are present in the mixture?

• A. Group 2
• B. Groups 2 , 13 and 14
• C. Groups 2 and 13
• D. Groups 2 and 14

Answer 1

Answer: (B)

Groups 2 , 13 and 14

Answer 2

: Cement is a mixture of calcium (Group 2) and aluminium silicates (Group 13 and 14).