Learn C# .Net MCQs
Prepare C# .Net MCQs (Multiple choice Questions) for exam and job interviews.
Which of the following is true about the "sealed" keyword in C#?
1) It prevents inheritance.
2) It allows multiple inheritance.
3) It only applies to methods.
4) None of the above
Answer : It prevents inheritance.
What is the output of Console.WriteLine("Hello".EndsWith("o"));?
1) true
2) false
3) Error
4) None of the above
Answer : true
Which of the following is used to remove an element from a list in C#?
1) Remove()
2) Delete()
3) Clear()
4) None of the above
Answer : Remove()
What is the output of Console.WriteLine(10 % 3);?
1) 1
2) 2
3) 0
4) None of the above
Answer : 1
Which of the following is used to format a string in C#?
1) String.Format()
2) FormatString()
3) Format()
4) None of the above
Answer : String.Format()
What is the output of Console.WriteLine("CSharp".ToLower());?
1) csharp
2) CSHARP
3) CSharp
4) None of the above
Answer : csharp
Which of the following is used to handle null values in C#?
1) ??
2) != null
3) isNull()
4) None of the above
Answer : ??
What is the output of Console.WriteLine(25 / 5);?
1) 5
2) 25
3) 0
4) None of the above
Answer : 5
Which of the following is used to reverse a string in C#?
1) Reverse()
2) String.Reverse()
3) Array.Reverse()
4) None of the above
Answer : Array.Reverse()
Which of the following is used to check if a list contains a specific element in C#?
1) Contains()
2) Has()
3) Find()
4) None of the above
Answer : Contains()