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Food Technology involves a blend of physical, chemical or microbiological processes and techniques for transforming raw ingredients into food and also other forms in food processing industry. Food processing refers to converting the raw ingredients into edible components or transforming food into other edible forms. BE/B.Tech in Food Technology is a 4-year program. while for a more info please look the below link

https://www.careers360.com/food-technology-course

while comes to veternianry its a field that you will be studying with respective to animals and their diseases while this field of study and career opputunities are very good and you have in govt as well.

while as in Agriculture is related to farming and improvements in farming methods even for this the career oppurtunites are very well

hope this helps