(1) Dispur is a part of Guwahati, which is the largest city in the state of Assam. Guwahati existed before India's independence, but Dispur specifically became the capital of Assam in 1973.

(2) Surat existed prior to India's independence. Surat has a long history and was an important trading port during the British colonial period.

(3) Chandigarh did not exist as a town before India's independence. It was planned and built as a new city after India gained independence in 1947.

(4) Bhubaneshwar, the capital of the Indian state of Odisha, did exist before India's independence. It has a rich historical and cultural heritage.

Option 2 is correct option.