Learn C# .Net MCQs
Prepare C# .Net MCQs (Multiple choice Questions) for exam and job interviews.
Which of the following is used to compare two strings in C#?
1) String.Compare()
2) CompareString()
3) String.Equals()
4) None of the above
Answer : String.Compare()
What is the output of Console.WriteLine(Math.Round(2.5));?
1) 2
2) 3
3) Error
4) None of the above
Answer : 2
Which of the following is used to create a new thread in C#?
1) Thread.Start()
2) Thread.Run()
3) Thread.New()
4) None of the above
Answer : Thread.Start()
What is the output of Console.WriteLine(10 >= 10);?
1) true
2) false
3) Error
4) None of the above
Answer : true
Which of the following is used to check if an object is null in C#?
1) == null
2) isNull()
3) nullCheck()
4) None of the above
Answer : == null
What is the output of Console.WriteLine(100 / 5);?
1) 20
2) 25
3) 10
4) None of the above
Answer : 20
Which of the following is used to iterate through an array in C#?
1) for
2) foreach
3) while
4) None of the above
Answer : foreach
What is the output of Console.WriteLine("Hello".Substring(1, 2));?
1) el
2) ll
3) He
4) None of the above
Answer : el
Which of the following is used to create an array in C#?
1) new[]
2) create[]
3) init[]
4) None of the above
Answer : new[]
Which of the following is used to add elements to a list in C#?
1) Add()
2) Insert()
3) Append()
4) None of the above
Answer : Add()