Between jogging and swimming, which is the better exercise if i want to burn fat?

Both will burn fat: Any time of aerobic exercise will burn fat.

You can figure out : The exercise that increases your heart rate the most for the same period of time will consume the most calories. A recent study showed that walking and running the same distance, even though the runner may do it in half the time, have the same health benefits. Jogging usually is more calorie consuming for the same period of time.