Which of the following is not a reserved keyword in C++?

readable mutable default volatile

Which constructor will initialize the base class data member?

base class only derived class class none of the mentioned

Why reference is not same as a pointer?

All of the mentioned A reference can never be null. Reference doesn't need an explicit dereferencing mechanism. A reference once established cannot be changed.

How many objects can be created from an abstract class?

Zero One Two As many as we want

Hierarchy decides which operator

is used first is most important is fastest Operates on largest numbers