The social, political and economic impact of the First World War on India was as follows.
Social impact: There was an increased awareness among Indians about the wider world as Indian soldiers returned home after fighting for the British empire. Due to the bravery of Indian soldiers, Indians realized that they were not inferior to the British. This boosted self confidence among Indians.
Political impact: The British did not keep the promise of making India self-governing after the war. This created political anger among the people of India. There was a rise of nationalism among Indians. In particular, Mahatma Gandhi was disillusioned with the British. He launched the non-cooperation movement soon after the war ended.
Economic impact: There was a sharp increase in demand for Indian goods as production in Europe wa disrupted due to the war. This led to inflation in India. The manufacturing sector in India also benefited.