The number of countries signed the Paris climate agreement as on 22 April 2016 is

The Author of the famous book "The making of India : The untold story of British Enterprise' is

In which place did the Prime Ministe Narendra Modi launch the "Swachh Bharat Abhiyan"

The oxidation state of an element in the free and uncombined state is

Which of the following has elasticity nearly equal to 1

The period of a geostationary artificial satellite of the earth is