1297ForestryMedium
A part of the rock forming material of the earth comprises:
ANitrates of Fe and Al
BAluminosilicates of Na, K and Ca
COxides of Ca and Na
DOxides of Ca and K
Correct answer
B. Aluminosilicates of Na, K and Ca
Explanation
The correct answer is Aluminosilicates of Na, K and Ca.