Hardness
Alkanility
Fluoridity
COD,BOD
Membrane Technology
100
STANDARD SOLUTION OF CALCIUM CARBONATE... HINT:EDTA TITRATION
WHICH REAGENT IS USED IN STANDARDISING EDTA SOLUTION..?
100
[CARBONATE ION]=0.....
What is common condition for ..P=0 and P=M...?
100
Its a outer orbital colorless octahedral complex formed in SPADNS method
[Zr-SPADNS] + F2 --------> [ZrF6] X DESCRIBE X ..
100
COD=BOD...
what is the condition when only biological oxidisable impurities is present in a water sample..?
100
It is principle of membrane Technology...
OSMOSIS..is principle of which technique..?
200
PH 10 .. hint: EDTA titration
In,EDTA Titration, AMMONIA-AMMONIUM CHLORIDE is buffered at an PH of ...?
200
WATER becomes ALKALINE when THESE IONS are PRESENT, even when all alkaline causing ions such as, BICARBONATE, CARBONATE, HYDROXYL. ..are ABSENT
What happens when BORATE/PHOSPHATE IONS are added to WATER SAMPLE..?
200
SPECTROPHOTOMETRIC METHOD.....
what is ALTERNATIVE name to COLORIMETRIC method...?
200
DISCHARGE of VIOLET color and BLUE GREEN to REDDISH BROWN IS OBSERVED....
What is color change in BOD and COD experiment..?
200
Brushes the salt deposition..
What is role hydrophobic methyl groups in polysulfone membrane..?
300
Denticity is 2.. hint: EDTA Titration
What is denticity of EBT indicator?..
300
REAPPERENCE of PINK color...
What is color change when METHYL ORANGE is added..? (PH=4.5)
300
SPADNS method follows this law....
Is BEER LAMBERTZ followed by SPADNS method..?
300
IT PREVENTS INTERFERENCE OF NITROGEN OXIDES..
Why is SODIUM AZIDE used in BOD experiment..?
300
DUE TO LINEAR STRUCTURE..WITH NO MAJOR SIDE GROUPS
WHY POLYURETHANE MEMBRANE IS FLEXIBLE..?
400
CALCIUM\\MAGNESIUM STEARATE
What is CHEMICAL name of precipitate formed by HARD WATER..?
400
It gives biological organic resistant matter..
Why is COD preferred over other paramaters of WATER like BOD, ALKALINITY...?
400
570nm of YELLOW wavelength absorbtion..
What is MAXIMUM wavelength absorbtion of SPADNS ...?
400
It is OXYGEN CARRIER in WINKLERS method which gets precipitated ,cleared by the addition of conc acid..
What is role of BASIC MANGANIC HYDROXIDE {MnO(OH)2} in WINKLERS method..?
400
AMIDE group acts as HYDROPHILLIC group and membrane is used for FABRICATION
Which is hydrophillic group in POLYURETHANE ?...
500
high solubility product of magnesium hydroxide... hint:temporary hardness
When CALCIUM BICARBONATE is heated it gives, CALCIUM CARBONATE ,but when MAGNESIUM BICARBONATE is heated it gives,MAGNESIUM HYDROXIDE,why..?
500
This type of ALKALINITY involves all 3 alkaline causing ions but contribution due to 2 ions becomes ZERO....
What is condition for P=0.5M ALKALINITY?..
500
STRAIGHT LINE with equation Y=MX....
What is SHAPE of GRAPH plotted for colorimetric reading against concentration of fluoride in SPADNS method..?
500
SODIUM TETRATHIONATE.....
what is the END PRODUCT formed in WINKLER'S method..?
500
N-METHYL PYROLIDINONE...
Which POLAR SOLVENT used for dissolution of membrane polymer in NIPS method..?
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