yes, pudding shouldn't hurt your drain at all.
No, it is not safe to put grease down the drain as it can cause clogs and damage to the plumbing system.
Yes. Otherwise the pudding will be watery.
You can put a liquid pipe snake down your drain or put a hose down there
No, it is not safe to put paint down the drain as it can harm the environment and clog pipes. It is recommended to dispose of paint properly at a hazardous waste facility.
No, it is not recommended to put eggshells down a garbage disposal as they can damage the blades and clog the drain.
What I usually do, is I put my pudding in a container that comes with a cover. You could use a small Tupperware container. If you use plastic wrap, push the wrap down onto the surface of the pudding and let the edges lap over the sides of the bowl. This will keep air off the surface of the pudding, prevent sweating, and also prevent a skin forming on the pudding as it cools.
You can put it down the drain, nothing is really stopping you from doing so but you shouldn't put it down the drain. Liquid nitrogen is extremely cold and can have explosive consequences once it sublimates into a gas and could potentially burst your pipes.
By plumbing codes, no.
no
the sewer is where things that you flush or put down the drain go, a drain is the opening is a sink or shower that sends things to the sewer
It depends on where you put it, and how much pudding we're talking about.
It is not recommended to put bleach in the drain as it can damage pipes and may react with other substances to produce harmful gases. It is better to use a specialized drain cleaner or a mixture of baking soda and vinegar for unclogging drains.