The Green Revolution in India, which began in the 1960s, brought significant advancements in agricultural productivity, mainly through the use of high-yielding varieties of seeds, chemical fertilizers, and modern irrigation techniques. However, it had several socio-economic consequences, including:
(A) Led to regional inequalities: The Green Revolution benefited regions with better irrigation facilities and infrastructure, leading to disparities between regions (e.g., Punjab, Haryana, and Western Uttar Pradesh) that experienced higher yields compared to drier or less developed regions.
(B) Increasing mechanisation in agriculture led to displacement of service caste groups: The introduction of new machinery and technology in farming displaced some service caste groups who were traditionally involved in manual labor and other services within rural areas.
(D) It was primarily the medium and large farmers who were able to benefit from the new technology: Larger and wealthier farmers had the financial resources to afford the new technologies (seeds, fertilizers, irrigation systems), while smaller and poorer farmers were often unable to take full advantage, exacerbating social inequalities.
However, (C) Increase in violence among landed vs landless workers is not a primary or direct consequence of the Green Revolution. While inequalities between landowners and landless workers did increase, it wasn't specifically tied to an increase in violence, so (C) is not included in the correct answer.
Thus, the correct option is (4) (A), (B) and (D) only.