C# Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to C#. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - Which of the following is a contextual keyword in C#?
Answer : D
Explanation
All of the above options are contextual keywords.
Q 2 - Which of the following defines boxing correctly?
A - When a value type is converted to object type, it is called boxing.
B - When an object type is converted to a value type, it is called boxing.
Answer : A
Explanation
When a value type is converted to object type, it is called boxing.
Q 3 - Which of the following converts a type (integer or string type) to date-time structures in C#?
Answer : D
Explanation
ToDateTime() method converts a type (integer or string type) to date-time structures.
Q 4 - Which of the following operator casts without raising an exception if the cast fails in C#?
Answer : C
Explanation
as operator casts without raising an exception if the cast fails.
Q 5 - Which of the following access specifier in C# allows a class to hide its member variables and member functions from other class objects and functions, except a child class within the same application?
Answer : A
Explanation
Protected Internal access specifier allows a class to hide its member variables and member functions from other class objects and functions, except a child class within the same application.
Q 6 - Which of the following is correct about nullable types in C#?
B - You can assign true, false, or null in a Nullable<bool> variable.
Answer : D
Explanation
All of the above statements are correct.
Q 7 - Which of the following is the default access specifier of a class?
Answer : D
Explanation
Default access specifier for a class type is Internal.
Q 8 - Which of the following is the correct about interfaces in C#?
A - Interfaces are declared using the interface keyword.
Answer : C
Explanation
Both of the above options are correct.
Q 9 - Which of the following preprocessor directive defines a sequence of characters as symbol in C#?
Answer : A
Explanation
#define: It defines a sequence of characters, called symbol.
Q 10 - The finally block is used to execute a given set of statements, whether an exception is thrown or not thrown.
Answer : A
Explanation
The finally block is used to execute a given set of statements, whether an exception is thrown or not thrown.
