salad can not be cooked in the microwave.
salad
Grapes
It is not usually nesessary to put a cover on food in the microwave oven. Some people cover food to prevent soiling the inside of the oven.
You can heat any food in an over that you would in a microwave, you'll just have to put it in an ovensafe container. For example, you can't put plastic in the oven but it works in a microwave.
A microwave oven passes (non-ionizing) microwave radiation (at a frequency near 2.45 GHz) through food, causing dielectric heating by absorption of energy in the water, fats and sugar contained in the food. An oven uses thermal heat. You can put metal in an oven! A woman can stand near an oven when she's pregnant! Microwaving food isn't the best quality, but it is the quickest!
microwave
metal objects some plastic objects. Some foods are not clever to be used in a microwave like an egg, which will explode with pressure and make a mess inside your microwave oven if not break it.
plate
No, just because it's microwave safe does not mean it's oven safe. The thermal mechanisms involved in microwave radiation and convective heat are completely different. Many plastics are microwave safe, but you should never put plastic in the oven.
We put tin foil in our oven at the very bottom. I honestly cant tell you why but apparently it does something to help. It doesn't even catch on fire if that was what you were wondering as well.
There should be a dial to select the temperature you desire. Set the dial, and wait about 10 minutes for the oven to achieve the setpoint temperature, then put the food into be baked or cooked. Be sure to turn the oven off when cooking has completed.
Yes it is ok. Just do not put it in the microwave. It will spark.
put it in a microwave oven
Yes you can. You cannot though if it's a microwave oven, and you cannot put on the oven itself, only as a lid for a pan etc.