Distinguish between thermoplastic and thermosetting resins. ?
Concept: Thermoplastic Plastic
Calculate the quantity of the pure lime and soda required for softening of 1,00,000 litres of water containing the following impurities in ppm. The purity of lime is 70% and soda is BS% Ca(HCO3) = 30.2 , Mg(HCO3) = 20.8 ,CaCI2 = 28.1 ,MgCl2 = 8.78, CaSO4 = 35, MgSO4 = 6.7 .
Concept: Softening of water by Hot and Cold lime Soda method and numerical problems
Discuss the treatment of water using bleaching powder
Concept: Drinking Water Or Municipal Water
Calculate the total hardness in ppm in given water sample.
: 50ml of standard hard water , containing 1mg pure CaCO3 per ml consumed 20ml EDTA solution.
: 50ml of water sample consumed 30ml EDTA solution using EBT indicator.
Concept: Hardness of Water
Distinguish between BOD and COD.
Concept: Bod - Definition and Significance
Give the preparations, properties and uses of Kevlar.
Concept: Preparation, properties and uses of Kevlar
Giass transition temperature
Concept: Effect of heat on the polymers (Glass transition temperature)
Vulcanisation
Concept: Rubbers > Compounding of Rubber (Vulcanization of Rubber)
Write a brief note on conducting polymers.
Concept: Conducting Polymers
List the uses of polymer in medicine and surgery.
Concept: Polymers in Medicine and Surgery
What are the limitations of Phase rule?
Concept: Advantages and Limitations of Phase Rule.
Distinguish between alkaline and non alkaline hardness?
Concept: Hardness of Water
6ml of waste water was refluxed with 25ml ofK2Cr2 O7 solution and after refluxing the excess unreacted dichromate required 20ml of 0. 1 N FAS solution. A blank of distilled water on refluxing with 25 ml of K2Cr2O7 solution required 35ml of 0. 1 N FAS solution . Calculate the COD of the waste water sample.
Concept: COD- Definition and Significance
The hardness of 85000 litres of water sample was removed by passing it through a zeolite softener. The zeolite required 2000 litres of NaCl solution containing 190 mg/lit of NaCl for regeneration. calculate the hardness of sample.
Concept: Zeolite process and numerical problems
How is activated sludge process carried out for the treatment of waste water? Explain with flow sheet diagram.
Concept: Sewage Treatment
What are the advantages of ion exchange process?
Concept: Ion Exchange Process and Numerical Problems
A 1Oml of sample of water was refluxed with 20ml potassium dichromate solution and after refluxing the excess unreacted dichromate required 26.2ml of 0. 1M FAS solution. A blank 1Oml of distilled water on refluxing with 20ml of dichromate solution required 36ml of 0. 1M FAS solution. Calculate the COD of waste water .
Concept: COD- Definition and Significance
Calculate the amount of lime (85% pure) and soda (95% pure) required to soften one million litre of water which contains CaCO3 = 12. 5ppml MgCO3 = 8.4ppml
CaCl2 = 22.2ppml , MgCl2 = 9.5ppml C02 = 33ppml HCI = Z3ppml organic matter= 16.Bppm
Concept: Softening of water by Hot and Cold lime Soda method and numerical problems
What are cation and anion exchangers?
Concept: Ion Exchange Process and Numerical Problems
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