A. Magnesium and aluminium
B. Calcium and aluminium
C. Magnesium and calcium
D. Sodium and aluminium
This question was posed to me in examination.
I want to ask this question from Stones topic in chapter Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials
The best I can explain: Dolomite is a bicarbonate of magnesium and calcium. It is available in different shades and is insoluble in ordinary water.