Arrange the following works of Dr. B.R. Ambedkar in the correct chronological order of their publication.

A) Mr. Gandhi and Emancipation of Untouchables
B) The annihilation of caste
C) The problem of the rupee: Its origin and its solution
D) Federation versus freedom
E) Buddha and his dhamma

Choose the correct answer from the options given below.

The correct answer is C, B, D, A, E.

To arrange the works of Dr. B.R. Ambedkar in the correct chronological order, we look at the publication years of each of the listed works:

C) The problem of the rupee: Its origin and its solution - Published in 1923. This book was originally Dr. Ambedkar's doctoral thesis submitted to the London School of Economics.
B) The annihilation of caste - Published in 1936. This is one of his most famous works, originally prepared as an address for the 1936 conference of a group of liberal Hindu caste-reformers in Lahore.
D) Federation versus freedom - Published in 1939. This work contains the text of an address delivered by Dr. Ambedkar on January 29, 1939, at the Gokhale Institute of Politics and Economics in Pune.
A) Mr. Gandhi and Emancipation of Untouchables - Published in 1943. This was a paper read by Dr. Ambedkar at the Pacific Relations Conference held at Quebec, Canada, in December 1942, and subsequently published in 1943.
E) Buddha and his dhamma - Published posthumously in 1957. This treatise on Buddha's life and Buddhism was completed in 1956 and published shortly after Dr. Ambedkar's demise.

Comparing the years of publication:
1923 (C) → 1936 (B) → 1939 (D) → 1943 (A) → 1957 (E)

Therefore, the correct chronological sequence is C, B, D, A, E.