Notably, the US President Barack Obama stands on top on the social networking giant with 46 million likes on his Barack Obama campaign page.

However, as the study suggests, Narendra Modi took a lead over President Obama on the basis of the number of interactions through post likes, comments and shares with over 200 million interactions in 2015. It is more than five times of President Obama.

Besides, Obama's posts do not enjoy as much attention as PM Modi and hardly get shared more often when compared to PM Modi. In the study, Argentina's new President Mauricio Macri was acknowledged as the the most engaging world leader. He was also termed as an 'undisputed Facebook president.'

According to the study, about 90 per cent of all administrators have an official Facebook presence. The study also reveals that 87 heads of state, 82 heads of government and 51 foreign ministers upholds personal pages on the networking site.

As per the study, the governments of 24 nations are yet to show their presence on Facebook including China and Switzerland. In China, the social network is banned while in Switzerland, the former president initiated a personal page in 2013, but deactivated it four months later.

With passage of time, Facebook has turned out to be the much-loved platform of choice for world leaders and governments to connect with their voters and constituents.