Misc: In what Australian state would you find Swan Hill?

Questions

Don't Strain Yourself Thinking ;-) A 3 1/2" floppy disk measures ?

Don't Strain Yourself Thinking ;-) A brown crayon is what color?

Don't Strain Yourself Thinking ;-) A smoke detector will alarm if it detects ?

Don't Strain Yourself Thinking ;-) A water heater keeps ?

Don't Strain Yourself Thinking ;-) Although not all come from France, ?