Question

Which of the following compounds contains both magnesium and silicon as constituents ?
A. Micas
B. Talc
C. Olivine
D. All of these

Answer 1

Correct Answer - D
Mg occurs in a wide range of silicate minerals , olivine `(Mg,Fe)_(2)SiO_(4), " talc " Mg_(3)(OH)_(2)Si_(4)O_(10), " chrysotile " Mg_(3)(OH)_(4)Si_(2)O_(5) (" asbestos "), " and micas such as " K^(+)[Mg_(3)(OH)_(2)AISi_(3)O_(10)]^(-)`.