Which of the following is an INCORRECTLY stated social impact of the Green Revolution?

The correct option is "Only farmers involved in subsistence agriculture were benefitted".

Let us analyze the social impacts of the Green Revolution to understand why this statement is incorrect:
1. Benefit to Medium and Large Farmers: The Green Revolution required expensive inputs such as High-Yielding Variety (HYV) seeds, chemical fertilizers, pesticides, and modern irrigation systems. Since medium and large farmers had the necessary capital and access to credit, they benefited the most. Thus, the statement "Primarily, the medium and large farmers were benefited" is correct.
2. Impact on Landless and Marginal Farmers: Small and marginal farmers could not afford the expensive technology and inputs, which increased the income gap between rich and poor farmers. Many small farmers fell into debt or lost their land, worsening their economic condition. Therefore, the statement "Worsened the condition of landless and marginal farmers" is correct.
3. Displacement of Service Castes: The introduction of modern agricultural machinery (like tractors and harvesters) reduced the need for traditional labor and services provided by service caste groups (under the Jajmani system), leading to their displacement. Thus, "There was displacement of service caste group" is correct.
4. Subsistence Agriculture: Subsistence farmers grow crops primarily to feed their own families, with little or no surplus for the market. Since the Green Revolution focused heavily on commercialization and high-cost inputs, subsistence farmers did not benefit significantly. Instead, it was commercial and wealthy farmers who reaped the benefits. Therefore, stating that only subsistence farmers benefited is factually incorrect.