Answer:
Yes, it is true
Step-by-step explanation:
The computation of the time required to cool the water is shown below:
GIven that
Average cop = 2.8
Therefore the cooling effect is
= 2.8 × 400 W
= 1,120 W
ANd, the specific heat of water is 4.2 kj/kg°C i.e 4,200 j/kg°C
Now we assume the time is t
As we know that

t = 1,125 seconds
So, it would be 19 minutes
Therefore it is true