Question

Water should be boiled for at least
minutes to kill germs.
iii) 20-30
ii) 15-20
i) 5-10
​

Answer 1

Answer:

If you've ever read about water purification on internet forums or social media, it's likely that you encountered at least one person who asked, “how long should water be boiled before it's considered safe?” This is a common question, and one that's prudent to ask — after all, you wouldn't want to take any chances of consuming bacteria or protozoa that will make you severely ill. Unfortunately, this question has also led to the spread of some misinformation on the topic.

Water over rocks

This water may appear clear and clean, but it can contain invisible pathogens that will definitely ruin your day.

First of all, you may hear self-proclaimed “experts” on the internet say that water must be boiled for a minimum time of 5 minutes, 10 minutes, or even 20 minutes to ensure that all waterborne pathogens have been killed. This minimum boiling time constraint is a myth, and we'll explain why.

Scientific research tells us that waterborne pathogens (bacteria, protozoa, and viruses) are killed or inactivated at high temperatures. According to the World Health Organization, a water temperature of 158°F (70°C) will kill 99.999% of bacteria, protozoa, and viruses in less than 1 minute.

Answer 2

Answer:

Hey friend, the exact time taken to kill germs present in water is 1 minute.

So, according to the option 5-10 minutes water should be boiled.

Explanation:

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