Which Article of the Indian Constitution deals with the proclamation of Emergency ?

Which one of the following is not a circumstance for proclamation of Emergency by the President of India under Article 352 of the Constitution of India ?

Which one of the following is not mentioned as a form of Emergency in the Constitution of India?

According to which Article ‘National Emergency may be declared by the president of India?

Under which Article of the Indian Constitution President’s Rule can be imposed in a State?

Which one of the following Articles of the Indian Constitution has not so far been used?