The following states were formed after 1960. What was the correct sequence of their formation?

A) Haryana

B) Sikkim

C) Nagaland

D) Goa

The correct option is (C), (A), (B), (D).

To determine the correct chronological sequence of the formation of these Indian states after 1960, we can look at the year each state was officially established:

1. Nagaland (C):
Nagaland was created on December 1, 1963, as the 16th state of the Indian Union, separating the Naga Hills-Tuensang Area from Assam to address the regional demands of the Naga people.

2. Haryana (A):
Haryana was formed on November 1, 1966, as the 17th state of India. It was carved out of the state of Punjab on linguistic lines following the recommendation of the Shah Commission.

3. Sikkim (B):
Sikkim was initially a protectorate of India. It formally became a full-fledged 22nd state of the Indian Union on May 16, 1975, following a referendum and the passage of the 36th Constitutional Amendment Act.

4. Goa (D):
Goa was liberated from Portuguese rule in 1961 and was administered as a Union Territory along with Daman and Diu. It was elevated to full statehood on May 30, 1987, becoming the 25th state of the Indian Union.

Chronological Order:
Nagaland (1963) ⇒ Haryana (1966) ⇒ Sikkim (1975) ⇒ Goa (1987)
Thus, the correct sequence is (C), (A), (B), (D).