Depends on the appliance. Incandescent light bulbs, no problem. Fluorescent lamps - maybe. Appliances with induction motors like refrigerators, no. Things like hair dryers, probably OK. Check the label or manual of the appliance.
Most small personal or household double-insulated equipment made to operate both on 50 Hz and 60 Hz works equally well on both services. Certain clocks and equipment with a timer function however...
IMPORTANT NOTE The National Electrical Code in the U.S. allows for appliances to be supplied at 240 V only if they would draw more than 12 amps at 120 V (1440 W). So, small appliances are not allowed...
Yes, it can be and there is no problem at all Because most of the electrical appliances are made to work on 220v - 240v so it can also be plugged into a 240v outlet.
Yes, of course...giving 10 volts less is perfectly safe.
The standard voltage in the UK is 230 V (+10%/-6%) -in other words, it is allowed to vary between little over 216 V and 253 V. So, as you...
As they are both 230V 50Hz systems it should be possible to use a plug adapter, just as would be used anywhere else in Europe. Such adapters are commonly sold by shops in airports and in many towns...