Multiple choice general knowledge The chiefly used crop for producing bio-diesel is Kikar Coconut Jatropha Mustard Reveal answer Fill a bubble to check yourself C Correct answer Explanation Jatropha curcas is the chief crop used for biodiesel production in India. Its seeds contain high oil content (30-40%), it grows on marginal lands without competing with food crops, and the oil has suitable properties for biodiesel conversion.