Question

An ice cream has a marked value of 700 kcal. How many kilowatt hour of energy will it deliver to the body as it is digested

• A. 0.81 kWh
• B. 0.90 kWh
• C. 1.11 kWh
• D. 0.71 kWh

Answer 1

Answer: (A)

0.81 kWh

Answer 2

700 k cal = $700 \times 10 ^ { 3 } \times 4.2$J

$= \frac { 700 \times 10 ^ { 3 } \times 4.2 } { 3.6 \times 10 ^ { 6 } } = 0.81 \mathrm { kWh }$

[As ]