Sikkim became a full-fledged State of the Indian Union in:

उत्तर: (B) 1975

• (A) चूक

  Wrong: it became an associate state in 1974.

• (B) बरोबर

  Correct: the 36th Amendment made Sikkim the 22nd state on 16 May 1975.

• (C) चूक

  Wrong: too late.

• (D) चूक

  Wrong: 1975 is correct.