Answer : 1. "Madhya Pradesh"
Explanation :

Prime Minister Narendra Modi laid the foundation stone for the Downstream Petrochemical Complex and Refinery Expansion Project at BPCL's Bina Refinery in Madhya Pradesh. This state-of-the-art refinery, which will be developed at a cost of approximately Rs 49,000 crore, will produce approximately 1200 kilo tonnes of ethylene and propylene per year, which are vital components for various sectors such as textiles, packaging, pharma.