Can I store null value in info.plist?

Ans : 

Null or NSNull value type is not supported in info.plist file. Base type of info.plist file is array or dictionary. In array or dictionary, you can save only following type :

1. Array
2. Dictionary
3. Boolean
4. Data
5. Date
6. Number
7. String

No above type supports nil value. They are not optional. So null or nil value can not be stored in info.plist file.