Question : Gelena is a mineral of

Option 1: Iron

Option 2: Gold

Option 3: Lead

Option 4: Calcium

Question : Limestone, chalk and marble are different forms of ______.

Option 1: Calcium Phosphate

Option 2: Calcium Hydroxide

Option 3: Calcium Oxide

Option 4: Calcium Carbonate

Question : The chemical composition of cement is

Option 1: Limestone and Clay

Option 2: Limestone, Clay and Gypsum

Option 3: Limestone and Iron

Option 4: Clay and Gypsum

Question : Pregnant women usually become deficient in

Option 1: Sodium and Calcium

Option 2: Iron and Sodium

Option 3: Calcium and Iron

Option 4: Magnesium and Iron

Question : Which one of the following is igneous rock ?

Option 1: limestone

Option 2: granite

Option 3: marble

Option 4: slate