Biofuels

Maize (corn) is a versatile crop with numerous uses. **Statement 1 is correct:** Maize is a major source of starch, a carbohydrate used in various food and industrial applications. Cornstarch is a common thickening agent in cooking and is also used in bioplastics and pharmaceuticals. **Statement 2 is correct:** Biodiesel Feedstock Corn oil, extracted from the maize germ, can be processed into biodiesel, a renewable fuel alternative to traditional diesel. **Statement 3 is correct:** Alcoholic Beverage Production Maize is a key ingredient in various alcoholic beverages, including bourbon whiskey and corn-based ethanol for alcoholic drinks or fuel.

The question is asking about the raw materials that can be used for the production of biofuels according to India's National Policy on Biofuels. **Cassava** is a starch-rich root vegetable that can be used to produce biofuel. **Damaged wheat grains**, which are unfit for human consumption, can also be used to produce biofuel. **Groundnut seeds** are not mentioned in the National Policy on Biofuels as a raw material for biofuel production. **Horse gram** is also not mentioned in the National Policy on Biofuels as a raw material for biofuel production. **Rotten potatoes**, which are unfit for human consumption, can be used to produce biofuel. **Sugar beet** is a plant whose root contains a high concentration of sucrose and it is grown commercially for sugar production. It can also be used to produce biofuel. Therefore, according to India's National Policy on Biofuels, Cassava, Damaged wheat grains, Rotten potatoes, and Sugar beet can be used as raw materials for the production of biofuels.

* **Agricultural residues:** These include materials like crop stalks, husks, and leaves. They are a viable source of biomass that can be converted into biofuels, including Sustainable Aviation Fuel (SAF). * **Corn grain:** Corn grain is a source of sugars that can be fermented to produce ethanol, a biofuel. While ethanol is primarily used in gasoline blends, it can also be further processed into SAF. * **Wastewater treatment sludge:** This sludge is rich in organic matter. Through processes like anaerobic digestion, it can produce biogas, which can be further converted into SAF. * **Wood mill waste:** This includes sawdust, wood chips, and bark. These lignocellulosic materials can be converted into biofuels through various thermochemical or biochemical processes, ultimately leading to SAF production.  Therefore, all four materials can be used as feedstock for producing Sustainable Aviation Fuel.