Explanation:

• The first national flag is said to have been hoisted on August 7, 1906 in Calcutta (now Kolkata).
• It consisted of three horizontal stripes of red, yellow and green.
• Later, in 1921, freedom fighter Pingali Venkayya met Mahatma Gandhi and proposed a basic design of the flag, consisting of White red and green bands.
• After undergoing several changes, the Tricolour was adopted as our national flag at a Congress Committee meeting in Karachi in 1931.