When was Himachal Pradesh became Union Territory?

The correct answer is: B. 24th September, 1956

Himachal Pradesh was a part of Punjab until 1956. On 24 September 1956, it was declared a Union Territory. It became a full-fledged state on 25 January 1971.

Option A: 4th July, 1956 is incorrect. On this day, the States Reorganisation Act, 1956 was passed by the Parliament of India. This act reorganized the states of India on linguistic lines.

Option C: 1st November, 1956 is incorrect. On this day, the Indian states of Andhra Pradesh, Hyderabad, Mysore, and Travancore-Cochin were formed.

Option D: 21st September, 1956 is incorrect. On this day, the Indian states of Bombay, Madhya Pradesh, and Rajasthan were formed.