Electrical conductivity (EC) of water and total dissolved solids (TDS) are interrelated. The value of EC will
In which one of the following tests is the organic matter in the waste water used as food by microorganisms?
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Which one of the following organisms is responsible for enteric fever?
Presence of nitrogen in a waste water sample is due to the decomposition of
Which of the following cations impart(s) pseudo hardness to water?
Match List-l (Equipment) with List-ll (Parameter) and select the correct answer using the codes given below the lists:
List-l
A. Tintometer
B. Nephelometer
C. Imhoffcone
D. Muffle furnace
List-ll
1. Temperature
2. Colour
3. Turbidity
4. Settleable solids
5. Volatile solids
Codes:
A B C D
(a) 4 3 1 5
(b) 2 5 4 3
(c) 4 5 1 3
(d) 2 3 4 5
What is the most common cause of acidity in water?
Match List-I (Parameter) with List-ll (Impact) and select the correct answer using the codes given below the lists: List-l
A. Excess sulphates
B. Lack of iodide
C. Excess hardness
D. Excess dissolved oxygen
List-ll
1. Greater soap consumption
2. Laxative effect
3. Goitre
4. Corrosion of pipes
Codes:
A B C D
(a) 2 1 3 4
(b) 4 3 1 2
(c) 2 3 1 4
(d) 4 1 3 2
Which one of the following tests of water/ wastewater employs Eriochrome Black T as an indicator?
The maximum permissible limit for fluoride in drinking water is