Misc: what are non-precious metals called?

Questions

76. The first UK Top 10 chart appeared in November 1952 when A1 Martino was No 1 with 'Here in my Heart'. Who had three songs in that first top 10 chart?

Which fishing port in California was the setting for Steinbeck's novels 'Cannery Row' and 'Tortilla Flat'?

Fu Manchu was the adversary of which Scotland Yard detective?

What was the name given to the 3rd Indian Division that operated under the command of Brigadier Wingate during World War II?

Which gangster was shot dead by the FBI on 22 July 1934 as he came out of the Biograph cinema in Chicago?