Who among the following served as Governor for the longest term?

Dharma Vira
Birendra Narayan Chakraborty
Ranjeet Singh Narula
Jaysukh Lal Hathi

The correct answer is A. Dharma Vira.

Dharma Vira served as the Governor of Punjab for 6 years and 10 months, from 1962 to 1968. He was the first Governor of Punjab after the state was reorganised in 1966. He was also the Governor of Himachal Pradesh from 1968 to 1972.

Birendra Narayan Chakraborty served as the Governor of Assam for 5 years and 10 months, from 1972 to 1978. He was also the Governor of West Bengal from 1978 to 1981.

Ranjeet Singh Narula served as the Governor of Haryana for 5 years and 2 months, from 1981 to 1986. He was also the Governor of Punjab from 1986 to 1989.

Jaysukh Lal Hathi served as the Governor of Gujarat for 4 years and 10 months, from 1989 to 1994. He was also the Governor of Rajasthan from 1994 to 1998.