What is the difference between const and readonly?

Which statement is correct about the C#.NET code snippet given below? Stack st = new Stack(); st.Push('Csharp'); st.Push(7.3); st.Push(8); st.Push('b'); st.Push(true);

The expression of a lock statement must denote a value of a type known to be a?

Identifier is a name which can be used to identify a __, __, __?

Which is the correct way to enumerate an Enum in C#?

Which of the following statements are correct about a HashTable collection? (Choose all that apply)

In C#, simple types like int, char, bool etc has member functions.

What will be the output of the following C# code: int num = 1; Console.WriteLine(NUM.ToString());

Is the following code valid? string x = 'test'; for (; x == 'test'; ) { x = 'not test'; }

Which keyword would be used in the class definition if we did not want to create an instance of that class?

Which C# statement is equivalent to this: int myInt = new int(); ?