1. Which of the following is a valid C# identifier?
Explanation: The valid C# identifier among these is class.
Report for correction2. Which of the following functions return absolute value of a variable?
Explanation: To return the absolute value of a Decimal number Abs() function is used.
Report for correction4. The capability of an object in C# to take number of different forms and hence display behaviour as according is known as?
Explanation: Polymorphism allows a class to have multiple implementations with the same name. It is one of the core principles of Object Oriented Programming.
Report for correction5. Which data type is used to store whole numbers in C#?
Explanation: To store whole numbers in C# int datatype is used.
Report for correction6. Which C# loop construct is used to iterate through an array or collection?
Explanation: The foreach loop in C# iterates items in a collection; like an array or a list.
Report for correction7. Which of the following keyword is used for including the namespaces in the program in C#?
Explanation: The keyword used for including the namespaces in the program of C# is 'using'.
Report for correction8. Which C# keyword is used to create an instance of a class?
Explanation: The keyword used to create an instance of a class in C# is 'new'.
Report for correction9. Which of the following is not a valid data type in C#?
Explanation: The number is not a valid data type in C#.
Report for correction10. Which of the following is NOT a primitive data type in C#?
Explanation: All others are primitive data type; where as string is non primitive data type.
Report for correction11. Which of the following is the default access specifier of a class member function?
Explanation: Default access specifier for the class member function is Private.
Report for correction12. Which C# access modifier provides the widest level of access?
Explanation: The public modifier has the widest scope. When a class or its members declared public they are accessible from everywhere.
Report for correction13. In C#; which access modifier is used to specify that a class member can only be accessed within its own class and derived classes?
Explanation: To allow a class member to be accessed within its own class and derived class 'protected' access modifier to be used.
Report for correction14. In C#; which access modifier is used to declare a class member that can be accessed only within its own class?
Explanation: To allow a class member to be accessed within its own class alone; 'private' access modifier to be used.
Report for correction15. Which access modifier makes a member accessible only within its own class?
Explanation: private access modifier makes a member accessible only within its own class.
Report for correction16. Which of these methods is a rounding function of Math class?
Explanation: To round up a variable to nearest integer; Round() method is used.
Report for correction17. In C#; which keyword is used to define a class that cannot be instantiated and may only contain static members?
Explanation: When static keyword is used in a class; the compiler will guarantee that instances of this class cannot be created.
Report for correction18. In C#; which keyword is used to declare a class?
Explanation: The keyword used in C# to declare a class is 'class'.
Report for correction19. Which of the following is not a namespace in the .NET Framework Class Library?
Explanation: Process class is part of System.Diagnostics namespace.
Report for correction20. Which keyword is used to handle exceptions in C#?
Explanation: To handle exceptions 'catch' block is used.
Report for correction21. Which of the following converts a type to a string in C#?
Explanation: The method which is used to convert a type to string is ToString().
Report for correction22. Which of the following is used to handle exceptions in C#?
Explanation: To handle exceptions in C#; Try-catch-finally block is used.
Report for correction23. When a value type is converted to object type; it is called as what?
Explanation: When a value type is converted to object type; it is called as boxing.
Report for correction24. When a object type is converted to value type; it is called as what?
Explanation: When a object type is converted to value type; it is called as Unboxing.
Report for correction25. What is the C# equivalent of the 'if' statement in C++?
Explanation: The C# equivalent of the 'if' statement in C++ is also 'if'.
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