No, Keck is not a Jewish name. It's a name of Norse origin
I have no idea and it does not even say it in the textbook
Although Salada is not a Jewish surname in its origin, any name can be a Jewish name if it is the name of a Jewish person.
Although Howell is not a stereotypically Jewish surname, any name can be a Jewish name if it is the name of a Jewish person.
Cactus Keck died February 6, 1981, in St. Louis, MO, USA.
Peters can be a Jewish name (if it is a name used by a Jewish family) but it need not be Jewish. The name is used by Jews and by non-Jews. Think of all those Scandinavians.
Keck-Gottschalk-Keck Apartments was created in 1937.
Reenie Barrow's birth name is Irene Keck.
Dorothy Neathery's birth name is Keck, Dorothy A..
Charles Keck was born in 1875.
Kevin Keck was born in 1973.
Anthony Keck was born in 1726.
Anthony Keck died in 1797.
Charles Keck died in 1951.
Tinker Keck was born in 1976.
George Fred Keck died in 1980.
They are optical telescopes.
Karl Keck died on 1944-07-11.