Music History: Who made his last stage appearance on November 28, 1974?

Questions

Which 19th century Russian chemist formulated the Periodic Table of Elements?

During which conflict did the battles of Alma and Inkermann take place?

What was the name of Wagner's last Opera, first performed in 1882?

Kalium. is the Latin name for which element?

In which city did Zlata Filipovic write a diary in the 1990's which began just before her 11th birthday?