d and f BLOCK ELEMENTS

Which metal from the coinage group is mentioned as an example in the text?

• Cu and Ag
• Ag and Au
• Au and Pt
• Ag and Hg

Which elements are still referred to as coinage metals in the text?

• Alkali metals
• Halogens
• Group 11 elements
• Noble gases

Which group are the coinage metals traditionally part of?

• Group 1
• Group 11
• Group 17
• Group 18

Which element is used for the pigment industry according to the text?

• TiO
• Fe2O3
• Cr2O3
• ZnO

What is the basis of iron and steel production mentioned in the text?

• Melting pure iron and adding impurities.
• Heating iron ore directly without reduction.
• Reduction of iron oxides, removal of impurities, and addition of carbon and alloying metals.
• Only the addition of carbon to iron.