Which of the following units represent the largest amount of energy? (A) Electron-volt (B) Erg (C) Joule (D) Calorie

Calorie

electron volt to joule

1 electron volt = 1.6 x 10-19 joule

erg to joule

1 erg = 10-7 joule

calorie to joule

1 calorie = 4.18 joule

1 joule = 1 joule

The highest value is 4.18 joule. So, the unit that represents the largest amount of energy is calorie

Therefore, the correct option is (D)

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