This is NOT advised. An oven gets hot and house paint is not made to withstand high temperatures like that. House paint may smoke when it is heated up and put fumes into the home.
No, you can not use house paint to paint an oven. You must use a high temperature paint
You can paint an oven with a heat-resistant appliance paint, but some will say that over a year or two it does not look very good. Never use regular house paint or any paint that is not heat-resistant to paint your oven, it will not stand up to the heat.
If the pottery is pottery, any ceramic paint will work. Some require baking in a home oven, others don't. If it's terra cotta and not glazed, any exterior paint will work, but you MUST seal the inside or the paint will fall off from the moisture.
no
A convection oven contains a fan that a regular oven does not. This fan blows the air around inside the convection oven, setting up artificial convection currents that cause the temperature of the air throughout the convection oven to equalize, eliminating hot and cold spots that may be present in a regular oven. Convection ovens can usually bake or roast faster than regular ovens and do it more evenly.
A convection oven contains a fan that a regular oven does not. This fan blows the air around inside the convection oven, setting up artificial convection currents that cause the temperature of the air throughout the convection oven to equalize, eliminating hot and cold spots that may be present in a regular oven. Convection ovens can usually bake or roast faster than regular ovens and do it more evenly.
That is what conventional means, yes
A convection oven has a fan. A regular oven doesn't. Convection is the process whereby air flow allows for heat to be transferred from one surface to another.
High temperature automotive paint might last. There is powder coating that is baked on in an oven, but it would probably ruin the oven for regular baking due to the fumes given off in the process, Blacking for cast iron wood stoves would probably be the least offensive option. Clean the rust, wipe the Blacking on and heat the stove empty to set the finish.
heat
The answer depends on what brand of paint you use. To make sure it is oven safe (this is for any temperature) check the label on your paint to check for any flammable ingredients.
Any paint used with a paint base will work well to cover the existing paint.