Civil Engineering - Water Supply Engineering - Discussion

Discussion Forum : Water Supply Engineering - Section 6 (Q.No. 31)

Water Supply Engineering

31.

The maximum permissible colour for domestic supplies based on cobalt scale, is

5 ppm

10 ppm

15 ppm

20 ppm

25 ppm.

Answer: Option

Explanation:

No answer description is available. Let's discuss.

Discussion:

27 comments Page 1 of 3.

Abhilash said: 10 years ago

Answer should be E the limit is 5 to 25.

Sahil said: 9 years ago

Yes it is 25.

Gajan Rana said: 8 years ago

Yeah, it's 25.

Subhasish goswami said: 8 years ago

Desirable -5ppm.
Permissible- 25ppm.

Roy said: 8 years ago

For public supplies, the colour number on cobalt scale should not exceed 20 and should be preferably less than 10.

Shivu said: 8 years ago

It should be 10ppm.

Asim saha said: 8 years ago

10 to 20 ppm.

Satish Verma said: 7 years ago

10 ppm is correct.

Tapash Roy said: 7 years ago

20 ppm is correct.

Hemant karmur said: 7 years ago

It's right for the 20 PPM because of the cobalt scale is allowed for the 20 PPM in domestic water.

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