Which one of the following Articles was defended by Dr. B. R. Ambedkar on the plea that it would be used as 'a matter of last resort'?

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

In which one of the following States has the President’s Rule been imposed most number of times?

Which one among the following pairs of Articles relating to the Fundamental Rights cannot be suspended during the enforcement of Emergency under Article 359 of the Indian Constitution?

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 ?

Under which of the following articles the President of India can suspend the enforcement of Fundamental Rights (except Articles 20, 21)?