Even after 72 years of independence we failed to declare our National languageMost of the Country in the world have their own National Language. But India do not have one. As per Article 343(1) of the constitution, Hindi is declared as the Official Language. But we do not have a National Language.
The percentage of Hindi speaking population is more in the Country and also majority of the people understand the language better than any other language of the Country. Therefore why Hindi cannot be declared as the National Language of India?