Datatypes - General Questions

Which of the following is the correct default value of a Boolean type?

Which of the following statements are correct about datatypes in C#.NET?

1 Every datatype is either a value type or a reference type.

2 Value types are always created on the heap.

3 Reference types are always created on the stack.

4 Mapping of every value type to a type in Common Type System facilitates Interoperability in C#.NET.

5 Every reference type gets mapped to a type in Common Type System.

Which of the following statement correctly assigns a value 33 to a variable c?

byte a = 11, b = 22, c;

Which of the following are the correct way to initialise the variables i and j to a value 10 each?

1 int i = 10; int j = 10;

2 int i, j;
i = 10 : j = 10;

3 int i = 10, j = 10;

4 int i, j = 10;

5 int i = j = 10;

Which of the following statements are correct about data types?

1 Each value type has an implicit default constructor that initializes the default value of that type.

2 It is possible for a value type to contain the null value.

3 All value types are derived implicitly from System.ValueType class.

4 It is not essential that local variables in C# must be initialized before being used.

5 Variables of reference types referred to as objects and store references to the actual data.

Which of the following is the correct ways to set a value 3.14 in a variable pi such that it cannot be modified?

Which of the following statements are correct?

1 We can assign values of any type to variables of type object.

2 When a variable of a value type is converted to object, it is said to be unboxed.

3 When a variable of type object is converted to a value type, it is said to be boxed.

4 Boolean variable cannot have a value of null.

5 When a value type is boxed, an entirely new object must be allocated and constructed.

Which of the following is the correct size of a Decimal datatype?