1. Which one is the only Indian state who shares its border with Sikkim

(A)  Assam
(B)  Bihar
(C)  West Bengal
(D)  Arunachal Pradesh

2. The total number of recognised official languages in Sikkim is

(A)  2
(B)  5
(C)  9
(D)  11

3. In which year, the Indo-Sikkimese Treaty was signed

(A)  1945
(B)  1947
(C)  1949
(D)  1950

4. In which year, Sikkim becomes a part of India as its 22nd state

(A)  1972
(B)  1975
(C)  1978
(D)  1980

5. In Bangladesh, the Teesta River joins with the

(A)  Ganga River
(B)  Brahmaputra River
(C)  Mohana River
(D)  Gomti River