Learn C# .Net MCQs
Prepare C# .Net MCQs (Multiple choice Questions) for exam and job interviews.
What is the output of Console.WriteLine("A" + "B" + "C");?
1) ABC
2) A B C
3) Error
4) None of the above
Answer : ABC
Which of the following is a built-in data type in C#?
1) decimal
2) object
3) Both a and b
4) None of the above
Answer : Both a and b
What is the output of Console.WriteLine(10 < 5);?
1) true
2) false
3) Error
4) None of the above
Answer : false
Which of the following is NOT a loop structure in C#?
1) for
2) while
3) until
4) foreach
Answer : until
What is the output of Console.WriteLine(1 + 2 * 3);?
1) 7
2) 9
3) 6
4) Error
Answer : 7
Which of the following allows multiple values of different types to be stored in a single object?
1) Array
2) List
3) Dictionary
4) Tuple
Answer : Tuple
What is the output of Console.WriteLine("Hello".ToUpper());?
1) HELLO
2) Hello
3) Error
4) None of the above
Answer : HELLO
Which of the following is used to define an enumerator in C#?
1) enum
2) interface
3) class
4) None of the above
Answer : enum
What is the output of Console.WriteLine(5 == 5 && 3 > 2);?
1) true
2) false
3) Error
4) None of the above
Answer : true
Which of the following is used to implement a delegate in C#?
1) delegate
2) event
3) void
4) None of the above
Answer : delegate