Which denominations of polymer banknotes has the Government of India permitted the RBI to issue for trial purposes?

The Government of India has permitted the RBI to issue 100 crore polymer banknotes each in the ₹10 and ₹20 denominations for trial purposes to assess their durability, security, and utility. The government has clarified that polymer notes will not replace paper currency; Australia was the first country to adopt polymer banknotes in 1988, and today they are in circulation in approximately 60 countries.