Question

1 cal =

• A. 1000 J
• B. 273.15 J
• C. 80 J
• D. 4.18 J

Answer 1

The Correct Option is D

It is a known fact that: \[ 1 \, \text{cal} = 4.18 \, \text{J}. \] This is the standard conversion factor between calories and joules. Thus, the correct answer is \( 4.18 \, \text{J} \).