Indians offered cash prizes for marrying beneath their caste

The Indian Government is offering 50,000 rupees to higher-caste people who marry spouses from the lowest castes in its latest controversial effort to dismantle the ancient Hindu social hierarchy.

India's national carrier dishonours Indian Currency

Air India flights accepts only US Dollars or Dirhams on it's flights to UAE for in-flight purchases. If being in international territory is the reason for this, why would the tea vendor in the departure lounge (after emigration) accept Indian Rupees?