First off, a battery is what you get when you stick several cells together, so for the most common 1.5 volts the strictly correct answer is that they are cells, not batteries. The 9 volt rectangular thingies though, they are batteries.
Primary vs secondary is about rechargeable or not. A primary is not rechargeable, so a Duracell would most likely be a Primary cell.
Not if it's a regular duracell non rechargeable battery
there is alkaline in duracell and also zink
A primary battery is the first used, most common battery, the secondary battery would be like a back up battery, or a battery that is used less.
Duracell batteries are a brand of battery made by Duracell Inc. which is an American manufacturing company owned by Berkshire Hathaway.
Duracell
Duracell batteries typically last longer than other battery brands.
Duracell FTW
Gasoline/petrol (primary) --------> ac generator and battery(secondary)
it take an duracell battery in a flashlight non-stop lasts exactly 15 hours
none ya
a Duracell size D
Duracell