Misc: The Hardy boys & ______?

Questions

Name used interchangeably for a disease of rye, for the fungus causing the disease, for the sclerotium (compact hardened mycelium, or fruiting surface) of the fungus, & for the dried sclerotium, which contains certain valuable drugs?

1 followed by 48 zeroes =?

Napolean's last battle?

Napthalene is commonly found in what household item?

__________ is the capital of China (east asia)?