Question : Which of the following is an ore of Aluminium?

Option 1: Bauxite

Option 2: Granite

Option 3: Tantalite

Option 4: Magnetite

Question : Which of the following is a mettalic ore?

Option 1: Mica

Option 2: Quartz

Option 3: feldspar

Option 4: Galena

Question : 'Plaster of Paris' is made by partial dehydration of

Option 1: epsom salt

Option 2: gypsum salt

Option 3: blue vittriol

Option 4: green vitriol

Question : Which of the following are metalloids?

Option 1: Boron, Oxygen, Aluminium

Option 2: Boron, Mercury, Iron

Option 3: Boron, Silicon, Antimony

Option 4: Aluminium, Mercury, Copper

Question : Which of the following metals is most ductile?

Option 1: Copper

Option 2: Silver

Option 3: Gold

Option 4: Aluminium