Who/Which of the following is the custodian of the Constitution of India?

Who is called the custodian of the Constitution in India?

Who is known as the custodian of the Indian Constitution?

The term District Judge is mentioned in which of the following Article of Constitution?

Which of the following is concerned with the Supreme court of India?

Which one of the following conditions laid down in the Constitution of India for the issue of a writ of Quo-Warranto is not correct ?