Question

1 calorie ${}^{\circ }{C}^{-1}$=

• A. ${}^{\circ }{C}^{-1}4.8{JK}^{-1}$
• B. ${}^{\circ }{C}^{-1}4.2{JK}^{-1}$
• C. $1000Cal$
• D. All

Answer 1

The correct option is B ${}^{\circ }{C}^{-1}4.2{JK}^{-1}$

We have, $1calorie=4.2J$

Hence, $1calori{e}^o{C}^{-1}=4.2J{K}^{-1}$

as size of each degree is same on Celsius and Kelvin scales.