A. improve the teste of the water
B. remove the hardness in the water clear
C. coagulate sediments in the water
D. kill harmful bacteria in the water
E. make the water clear and colourless
Correct Answer:
Option D – kill harmful bacteria in the water
![An immersion heater rated 2.0A; 240V is used to boil water from temperature 52°C to 100°C. If the mass of the water is 2.5kg. determine the time taken to boil the water. [specific heat capacity of water = 4.2 x 10³ jkg−¹ k−¹ ] past-questions-and-answers](https://erudites.ng/wp-content/uploads/2020/06/past-questions-and-answers-150x150.jpg)
