Which of the following determination are NOT necessary for raw water from a lake for use as source of supply of water for boiler-feed ?1. Turbidity2. Bacterial count3. Iron4. Hardness.Select the correct answer using the codes given below :

Which of the following determination are NOT necessary for raw water f

1.	Which of the following determination are NOT necessary for raw water from a lake for use as source of supply of water for boiler-feed ?1. Turbidity2. Bacterial count3. Iron4. Hardness.Select the correct answer using the codes given below :
A.	1, 2 and 3
B.	1, 2 and 4
C.	1, 3 and 4
D.	2, 3 and 4
Answer» B. 1, 2 and 4

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Which of the following determination are NOT necessary for raw water from a lake for use as source of supply of water for boiler-feed ?1. Turbidity2. Bacterial count3. Iron4. Hardness.Select the correct answer using the codes given below :

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