Question

Which of the following units represent the largest amount of energy?

• A. Electron-volt
• B. Erg
• C. Joule
• D. Calorie

Answer 1

The correct option is D Calorie

$\text{1 eV = 1 electron-volt energy =}$ $1.6\times {10}^{-19}J$
${\text{1 erg energy = 10}}^{-7}J$
$\text{1 Joule = 1J}$
$\text{1 Calorie energy = 4.18 J}$
Hence, answer is option $D$.