MCQ
One calorie is equal to
- A$0.4184 $ $Joule$
- ✓$4.184$ $Joule$
- C$41.84 $ $Joule$
- D$418.4$ $Joule$
A calorie is the amount of energy that is supplied in the nutrients that make up food. Because it is a form of energy, calories can be converted to joules through a measurement of heat.
$1$ calorie $=4.186$ joules. is the required answer.
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(Molal depression constant for water is $1.80\, K\, kg\,mol ^{-1}$ and molar mass of $KCl$ is $74.6 \,g\, mol ^{-1}$ )