Yes
No. White wine vinegar is white wine that has been aged after its shelf life. Basically, vinegar is spoiled wine.
The older the wine, the richer the taste, as said by experts in wine. There is no age for white wine, but the older, the richer.
Red wine, used judiciously, it can also be good for you.
Ordinary vinegar - or a mixture of white wine and ordinary vinegar.
yes
No, because moscato is a sweet white wine, and marsala is a dry red wine.
White
Yes. I just made a stir fry that said to use red wine or vegetable oil and I used champagne, so why can't you use red wine instead of white?
You could but the results would be completely different and the taste might not be what you want. If it calls for red wine use red wine and don't use wine that is spoiled, you wouldn't use rotten vegetables why do some people use rotten wine ie wine that has turned or has sat open for many days.
I would not recomment it. Sherry is a fortified red wine. You can use vinegar or lemon juice in most recipes calling for white wine.
You can, but white balsamic tastes stronger than white wine vinegar, so you may want to reduce the quantity that you use.