Misc: A tincture of opium, was a common sedative in Victorian times?

Questions

Trivia : How many pieces are found in a chess set?

Trivia : How many stab wounds did Julius Caesar have when he died?

Trivia : How old was Alexander the Great when he died?

Trivia : How was "Abu Yusuf Ya'qub ibn Is-haq ubn as-Sabbah ibn 'omran ibn Ismail al-Kindi" better known ?

Trivia : How was William Pitt the Elder's son known?