Question :
Consider the following statements regarding diatomite filters.
1. They are not used for water having high turbidity.
2. They are not suitable for municipal water supplies.
3. They are not used for temporary and shifting camps.
Which of the above statement is/are false?
1. 1, 2,3
2. 1 only
3. 2 only
4. 3 only
Answer :
4 - 3 only
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