Question

Distinguish between national and official language

Answer 1

National language is what that us connected with nation and what that we used to speak from our birth till now.
official language is what that you have to speak or write in related to government or any private bodies. we don't learn official language from our birth we learn this in order to earn and get some place in our job.

Answer 2

Official language' usually refers to alanguage in which the government functions, and in which all government services are typically available by law. ... 'National language' is more general, and refers to any language that has some special status within the nation.National languages can be official languages too.