Which of the following Indians has been appointed as the chairperson of the United Nations Advisory Board on Disarmament Matters?

In which of the following countries will the 28th Conference of Commonwealth Speakers and Presiding Officers be held?

In which state was the first Braille library for visually impaired people recently opened?

What is the name of the mascot recently launched by the Unique Identification Authority of India (UIDAI)? 

On which of the following days is World Day for War Orphans celebrated every year?