In the context of India's Five Year Plans, a shift in the pattern of industrialization, with lower emphasis on heavy industries and more on infrastructure begins in

1. The question asks during which of India's Five Year Plans there was a shift in the pattern of industrialization, with lower emphasis on heavy industries and more on infrastructure. 2. The Second (1956-61) and Third (1961-66) Plans heavily emphasized the development of heavy industries (Mahalanobis model). 3. The Fourth Plan (1969-74) continued focus on growth but also aimed at self-reliance and growth with stability. 4. The Sixth Plan (1980-85) marked a move towards infrastructure development and poverty alleviation alongside industrial growth. 5. The Eighth Plan (1992-1997) was launched in the backdrop of economic liberalization (1991). This plan significantly shifted focus towards indicative planning, human resource development, and crucially, strengthening infrastructure (energy, transport, communication) to support a liberalized economy and private sector growth. The emphasis on state-led heavy industries was considerably reduced compared to earlier plans. 6. The Tenth Plan (2002-2007) continued this focus on infrastructure and aimed for higher growth rates. 7. The most definitive shift away from heavy industry emphasis towards infrastructure, driven by liberalization, occurred during the Eighth Plan.