Warwar hteinhtein chitthu lay do ein.Ko nay chin del eain.alloysေတြကို ဘယ္ေနရာေတြမွာ သံုးသလဲ။ Magnesium alloys are used for engineering construction. 7. Basic carbonate of magnesiumကို သြားတိုက္ေဆးမွာ ဘာအျဖစ္သံုးသလဲ။ Basic carbonate of magnesium is used as fillers in tooth paste. 8. Magnesium oxideဟာ ဘယ္လိုမ်ိဳးလဲ။ Magnesium oxide is a white powder and is only slightly soluble in water. 9. Magnesium oxideကို ဘယ္မွာသံုးသလဲ။ Magnesium oxide is used as fire resistance material. 10. Epsom saltရဲ႕ formulaက ဘာလဲ။ Formula of Epsom salt is MgSO
4
.7H
2
O. 11. Magnesium carbonateကို သဘာဝမွာ ဘယ္လိုေတြ႔ရသလဲ။ Magnesium carbonate occurs as magnesite (MgCO
3
) and as dolomite (MgCO
3
.CaCO
3
). 12. Magnesium sulphateကို သဘာဝမွာ ဘယ္လိုေတြ႔ရသလဲ။ Magnesium sulphate occurs in nature as kieserite (MgSo
4
.H
2
O). 13. Epsom salt(MgSO
4
.7H
2
O)ကို ေဆးဝါးမွာ ဘာအျဖစ္သံုးသလဲ။ Epsom salt(MgSO
4
