Which of the following is not used in biodiesel production?
18. Consider the following statements – 1. Biodiesel can be produced from vegetable oil, animal oil/fats. 2. Production process of Biodiesel is called as Trans-esterification. 3. The main benefit of biodiesel is that it is ‘carbon neutral’. 4. Biodiesel can be used alone, or blended with petro diesel in any proportion. Correct answer code is: