1
GATE CE 2016 Set 2
MCQ (Single Correct Answer)
+2
-0.6
A sample of water has been analyzed for common ions and results are presented in the form of a bar diagram as shown. GATE CE 2016 Set 2 Environmental Engineering - Quality Control of Water Question 5 English The non-carbonate hardness (expressed in mg/L as $${\mathrm{CaCO}}_3$$) of the sample is
A
40
B
165
C
195
D
205
2
GATE CE 2016 Set 1
Numerical
+2
-0
Effluent from an industry 'A' has a pH of 4.2. The effluent from another industry 'B' has double the hydroxyl (OH-) ion concentration than the effluent from industry 'A'. pH of effluent from the industry 'B' will be _______.
Your input ____
3
GATE CE 2014 Set 1
MCQ (Single Correct Answer)
+2
-0.6
For a sample of water with the ionic composition shown in the figure below, the carbonate and noncarbonate hardness concentrations (in mg/l as $${\mathrm{CaCO}}_3$$), respectively are: GATE CE 2014 Set 1 Environmental Engineering - Quality Control of Water Question 7 English
A
200 and 50
B
175 and 75
C
75 and 175
D
50 and 200
4
GATE CE 2012
MCQ (Single Correct Answer)
+2
-0.6
A water sample has a pH of 9.25. The concentration of hydroxyl ions in the water sample is
A
$$10^{-9.25}$$ moles/L
B
$$10^{-7.75}$$ moles/L
C
0.302 mg/L
D
3.020 mg/L
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Fluid Mechanics and Hydraulic Machines
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