no expert on this, but had it happen, and NO it isn't safe, will or can cause an arc or fire, had mine repainted by microwave service company...but this was many years ago when microwaves were very expensive, would just replace it now.........
All of Sterlite food storage items are microwave safe. They are designed to reheat food in the microwave. Use caution when reheating food high in sugar or fat as they can cause damage to microwave safe containers. See microwave manufacturer's instructions for information regarding the use of microwave safe containers in your microwave."
A bit of a burn on the wall of the cavity (the cooking space) in a microwave isn't generally a problem. Remove the foil and avoid placing metal objects back inside the oven again. Put a cup of water inside and see if it boils in a couple of minutes. If so, it is still working and you can use it until it dies naturally.
You can use glassware or any microwave-safe dish to cook chicken in the microwave. Check the bottom of any plastic dishes to see if they are microwave-safe.
NO!
No. It is safe to cook. Just remember to cook it in a microwave safe bowl if your gonna use the microwave.
You can generally use a clay (mud) pot in the microwave- you should check the bottom to see if it has "microwave safe" written on it.
NO
Yes. There are many thousands of products manufactured from silicon which are intended and safe for use in both conventional and microwave baking.
Do not! put a metal container or anything with even the slightest bit of metal on it in the microwave! you also don't want to put thin plastics in the microwave because they tend to melt. if you do use any kind of plastic your best bet is to only use the plastic that says"microwave safe" or "oven safe". You don't want to use the wrong kind of container when using the microwave. It could be dangerous. Microwave safe materials include glass, ceramics, paper products, and wax paper.
Yes but I would unplug when it is not in use.
They are safe to cook food in (as long as you follow to cooking instructions correctly).
no no