Not advised.
Some appliances may work, but I imagine most would either blow a fuse or just burn out. Definately not advised unless you use a transformer. With the right transformer everything should...
There are 110 volts going to recepticles along the walls ect. These are for lamps, vaccuum cleaners, most things besides stoves, dryers, heating and cooling(most). But the only way to use your 110...
Depends on what it is. Most appliances don't care. Motors will spin at a slightly different speed, but otherwise you are safe connecting a 50Hz appliance to a 60Hz supply.
Answer.
Perhaps, but...
Running larger motors on 240v means they operate with lower currents (amps). European System vs North American System Comparison: By way of a practical example, a common 120 volt American receptacle...