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  What Is NDA Exam 2020 ?     NDA(National Defence Academy)-2020       NDA&NA (1&2)-2020 exam is an entrance exam for admission to the Navy,Army and Air force wings. This exam is conducted by UPSC (Union Public Service Commission) in India.        This  is the national exam conducted all over India twice a year but this year because of this pandemic novel Corona virus (Covid-19) the exam NDA & NA (1) was to held in April 2020 because of this the NDA &NA (1&2) was postponed and combined.and held on September 6.           Th is exam contain 2 papers, one is Mathematics and other one is General Ability(GA) Mathematics paper has 120 objective questions which is based on PUC 1&2.The General Ability paper has 150 objective questions which are based on Biology, Physics, Chemistry, History, Geography.           He re below I have given this year NDA & NA(1&2)...