Question 6 :
Size of short integer and long integer would vary from one platform to another.
True, Depending on the operating system/compiler/system architecture you are working on, the range of data types can vary.
Question 7 :
Range of float id -2.25e+308 to 2.25e+308
False, The range of float is -3.4e+38 to 3.4e+38.