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Topic :: Water
CHEMICAL MATERIAL BALANCE - EXAMPLE 2.1 : Two methanol-water mixtures are contained in separate tanks. The first mixture contains 40.0 wt % methanol and the second contains 70.0 wt % methanol. If 200 kg of the first mixture is combined with 150 kg of the second, what are the mass and composition of the product? The symbol of weight percent is wt %.
1 2387CHEMICAL MATERIAL BALANCE - EXAMPLE 2.3 : A 1.5 weight % aqueous salt solution is concentrated to 4 weight % in a single-effect evaporator. The feed rate to the evaporator is F = 7500 kg / h and the feed is at 85 degree Celsius. The evaporator operates at 1 bar. By assuming that only pure solvent of water exists in the form of vapor from the feed, calculate the flow rate of such vapor V.
1 2471CHEMICAL MATERIAL BALANCE - EXAMPLE 2.5 : In a non-dilute absorber, the inlet gas stream consists of 8 mol % carbon dioxide in nitrogen. By contact with room temperature water at atmospheric pressure, 65 % of the carbon dioxide from a gas stream has been removed. (a) Find the mole ratio of carbon dioxide and nitrogen gases at inlet and outlet gas streams. (b) The Henry's Law provides y = 1640 x for carbon dioxide in water. Find the mole ratio when x = 0.0000427. Mole ratio is y / (1 - y) for y.
1 2485Question 79 - (a) The American Petroleum Institute gravity, or API gravity, is a measure of how heavy or light a petroleum liquid is compared to water. Let SG = specific gravity of petroleum liquid, and V = barrels of crude oil per metric ton. Given the formula for API gravity = 141.5 / SG - 131.5 and V = (API gravity + 131.5) / (141.5 x 0.159), find the relationship of SG as a function of V. (b) An oil barrel is about 159 litres. If a cylinder with diameter d = 50 cm and height h = 50 cm is used to contain the oil, find the volume V of the cylinder in the unit of oil barrel by using the formula V = 3.142 x d x h x d / 4. (c) First reference : 1 cubic metre = 6.2898 oil barrels. Second reference : 1 cubic metre = 6.37 oil barrels. What are the 2 factors that cause the difference in such reference data?
1 3024CHEMICAL FLUID MECHANIC - EXAMPLE 3.1 : Water flows through a pipe with circular cross sectional area at the rate of V / t = 80 L / s where V is the volume and t is time. Let Av = 80 L / s where A is cross sectional area and v is velocity of fluid. For point 1, the radius of the pipe is 16 cm. For point 2, the radius of the pipe is 8 cm. Find (a) the velocity at point 1; (b) the velocity at point 2; (c) the pressure at point 2 by using Bernoulli's equation where P + Rgy + 0.5 RV = constant. P is the pressure, R = density of fluid, V = square of fluid's velocity, g = gravitational constant of 9.81 N / kg and y = 2 m = difference of height at 2 points. The pressure of point 1 is 180 kPa.
1 2456Question 80 - Liquid octane has a density of 703 kilograms per cubic metre and molar mass of 114.23 grams per mole. Its specific heat capacity is 255.68 J / (mol K). (a) Find the energy in J needed to increase the temperature of 1 cubic metre of octane for 1 Kelvin. (b) At 20 degree Celsius, the solubility of liquid octane in water is 0.007 mg / L as stated in a handbook. For a mixture of 1 L of liquid octane and 1 L of water, prove by calculations that liquid octane is almost insoluble in water.
1 2964MASS TRANSFER - EXAMPLE 4.1 : A concentric, counter-current heat exchanger is used to cool lubricating oil. Water is used as the coolant. The mass flow rate of oil into the heat exchanger is 0.1 kg / s = FO. For oil, the inlet temperature TIO = 100 degree Celsius and the outlet temperature TOO = 55 degree Celsius. For water, the inlet temperature TIW = 35 degree Celsius and the outlet temperature TOW = 42 degree Celsius. What is the mass flow rate of water in kg / s, FW needed to maintain these operating conditions? Constant for heat capacity of oil is CO = 2131 J /(kg K) and for water is CW = 4178 J /(kg K). Use the equation (FO)(CO)(TIO ?TOO) = (FW)(CW)(TOW ?TIW).
1 2403MASS TRANSFER - EXAMPLE 4.2 : In a non-dilute absorber, graphical method is used to represent the process. In an X - Y coordinate system, X-axis represents mole of carbon dioxide / mole of water and Y axis represents mole of carbon dioxide / mole of nitrogen. The inlet gas stream consists of 8 mol % of carbon dioxide in nitrogen. (a) Find the S / G minimum as a slope that goes through the point (0, 0.0304) and (0.0000488, 0.086957). (b) Find the actual slope of operating line when it is 1.5 times the S / G minimum! (c) Find the value of x for inlet gas stream when y = 1640 x, y is mole fraction of carbon dioxide in nitrogen.
1 2407Question 88 - In the calculation of the growth of bacteria, colony forming unit (CFU) in serial dilution is used. In a laboratory, viable count assay is used to estimate CFU. Formula applied is CFU / mL = (number of colonies x dilution) / (amount plated, in unit mL). Acceptable plate count is either between 20 and 200 or between 30 and 300 according to 2 different references. A wastewater sample of 200 ml is added to and mixed with 1.8 L of sterile water. Another 200 ml of the mixture is added to and mixed with 1.8 L of sterile water. (a) Calculate the dilution of first mixture and the dilution of the second mixture. (b) 100 microlitres of wastewater samples from the first mixture and the second mixture are placed separately on 2 different alga plates. The first plate has 250 colonies and the second plate has 23 colonies. Calculate the average CFU / mL.
1 3030in the farm,water tank of 8000 litter capacity situated in 12 meter above.Farm owner want to lift 7000 litter of water within 7 minute to water tank of 12 meter above.which motor having HP rating is suitable for pumping??
1 3183The Purest form of water can be obtained from:- I) a deep tube well II) a running stream III) a hot water spring IV) a heavy shower of rain
1839How to calculate the cement plastering for circular and rectangular water storage tanks and how to calculate the area of circular and rectangular floor?? Please help me
1919does water content by KF will calculate only external moisture absorbed or the ligand ? (for ex copper sulphate pentahydrate)
NA,
1862before transformer oil dielectric strenght tests are taken the oil should be allowed to settle to remove option 1 air bubbles 2 gasses 3 contamination 4 water
1613
The blooms of these protists gives water a watermelon-like taste. What is this microlife called?
What is the importance of biofilms in a watery environment?
How to preserve filamentous fungi in distilled water ?
If you break off a piece of an aloe plant and put it in water, will roots grow and What is that type of propagation called?
Does oxygen and hydrogen map up water?
what is the effect of different types of water on plants?
What happens when regular water is replaced with salt water for plant consumption?
what are the membranes does a water molecule pass between the soil and a vacuole in a mesophyll cell?
The xylem tissue that carries water is called?
How do large trees, such as redwoods, get water from their roots to the leaves?
Assignment A software house got a project to automate sales/purchase department of a furniture store. The store management is clearly transferred their requirements to the software house management. There is no chance of changing the requirements afterwards. Software house management use waterfall process model to make the project. Given is the progress flow of water-fall process model In waterfall process model, the deliverable (document) produced in one phase serves as an input to the next phase. Suppose you are a project manager who is leading this project. It is decided to work and complete the project using waterfall process model approach. You are required to develop a plan in which the key task is to decide the deliverable that should be built during and after completion of each phase. Also give a description or required contents that must be included in those deliverables. You are not supposed to make the complete project. All you are required to do is to make a Project plan. In that, you need to give a set of deliverables (documents) which according to you, should be developed in each of the phase (Requirements, Designing, implementation, Testing, Maintenance). Also provide contents which should be there in each deliverable. The contents should be clear and have brief explanation. Note:: There are one folder and one file in the attached folder. The file is named as Assignment 4 write-up which is your assignment write-up. The other folder named Project deliverables is the folder in which you are required to organize and place your deliverables. Name of the document/deliverable saved in each folder should be mentioned in the file named checklist (This file is placed in the “Project deliverables” folder) For Example If you produce a deliverable named Requirement Specification (RS) in the “Requirements” phase. You need to do following tasks 1) Finalize the RS contents 2) Save the file in sub-folder named Requirements 3) Write the name of this document in the checklist file under the heading Requirements. Similarly, you need to make and save deliverables of each phase. Not all phases contain one deliverable. There must be some phases having more than one deliverables. PLEASE SIR PRIVIDE ME THE CHECK LIST FOR GIVE SENERION ? CHECKLIST ARE: 1-Requirements 2- Designing 3- Implementation 4- Testing 5- Maintenance
PAPER 1--GENERAL APTITUDE Directions:Each question given below consists of a word, followed by four words or phrases. Choose the lettered word or phrase that is most nearly opposite in meaning to the word in the question. ANTONYMS 1. Disregarded (a) heed (b) hopeful (c) evade (d) dense Ans. (a) 2. Obviate (a) becloud (b) necessitate (c) rationalize (d) execute Ans. (b) 3. Superficial (a) profound (b) exaggerated (c) subjective (d) spirited Ans. (a) 4. Abide (a) retract an offer (b) refuse to endure (c) shield from harm (d) exonerate Ans. (b) 5. Acerbity (a) noteworthiness (b) hypocrisy (c) mildness of temperament (d) lack of anxiety Ans. (c) Directions: Each question or group of questions is based on a passage or set of conditions. For each question, select the best answer choice given. Quesitions 6-9 In a certain society, there are two marriage groups, Red and Brown. No marriage is permitted within a group. On marriage, males become part of their wife's group: women remain in their own group. Children belong to the same group as their parents. Widowers and divorced males revert to the group of their birth. Marriage to more than one person at the same time and marriage to a direct descendant are forbidden. 6. A Brown female could have had I. a grandfather born Red II. a grandmother born Red III. two grandfathers born Brown (a) I only (b) II only (c) I and II only (d) II and III only (e) I,II and III Ans. (c) 7. A male born into the Brown group may have (a) an uncle in either group (b) a Brown daughter (c) a Brown son (d) a son-in-law born into the Red group (e) a daughter-in-law in the Red group Ans. (a) 8. Which of the following is not permitted under the rules stated? (a) A Brown male marrying his father's sister (b) A Red female marrying her mother's brother (c) A man born Red, who is now a widower, marrying his brother's widow (d) A widower marrying his wife's sister (e) A widow marrying her divorced daughter's ex-husband Ans. (b) 9. If widowers and divorced males retained the group they had upon marrying, which of the following would have been permissible?(Assume no previous marriages occurred) (a) A woman marrying her dead sister's husband (b) A woman marrying her divorced daughter's ex-husband. (c) A widower marrying his brother's daughter (d) A woman marrying her mother's brother, who is a widower (e) A divorced male marrying his ex-wife's divorced sister Ans. (d) Questions 10-13 Tom wishes to enroll in Latin AA, Sanskrit A, Armenian Literature 221, and Celtic Literature 701. Latin AA meets five days a week, either from 9 to 11 A.M or from 2 to 4 P.M. Sanskrit A meets either Tuesday and Thursday from 12 noon to 3 P.M., or Monday, Wednesday, and Friday from 10 A.M to 12 noon. Armenian Literature 221 meets either Monday, Wednesday, and Friday from 12:30 to 2 P.M., or Tuesday and Thursday from 10:30 A.M to 12:30 P.M Celtic Literature 701 meets by arrangement with the instructor, the only requirement being that it meet for one four-hour session or two two-hour sessions per week, between 9A.M and 4 P.M from Monday to Friday, beginning on the hour. 10. Which combination is impossible for Tom? (a) Latin in the morning, Sanskrit on Tuesday and Thursday, and Armenian Literature on Monday, Wednesday, Friday (b) Latin in the afternoon and Sanskrit and Armenian Literature on Monday, Wednesday, and Friday. (c) Latin in the afternoon, Sanskrit on Monday, Wednesday, and Friday,and Armenian Literature on Tuesday and Thursday (d) Latin in the morning and Sanskrit and Armenian Literature on Monday, Wednesday, and Friday (e) Latin in the afternoon, Armenian Literature on Monday, Wednesda and Friday, and Celtic Literature on Tuesday Ans. (d) 11. Which of the following gives the greatest number of alternatives for scheduling Celtic Literature, assuming that all other courses (a) Latin in the afternoon and Armenian Literature Monday, Wednesday and Friday (b) Sanskrit on Tuesday and Thursday and Armenian Literature on Monday, Wednesday and Friday (c) Latin in the afternoon and Armenian Literature Tuesday and Thursday (d) Latin in the morning and Sanskrit on Tuesday and Thursday (e) Sanskrit on Monday, Wednesday, and Friday. and Armenian Literature on Tuesday and Thursday Ans. (a) 12. If the Celtic instructor insists on holding at least one session on Friday, in which of the following can Tom enroll? (I) Armenian Literature on Monday, Wednesday, and Friday (II) Sanskrit on Monday, Wednesday, and Friday (a) I only (b) II only (c) both I and II (d) I or II but not both (e) neither I nor II Ans. (d) 13. Which of the following additional courses, meeting as indicated, can Tom take? (a) Maths--Monday, Wednesday, and Friday from 10A.M to 12 noon (b) French--Monday, Wednesday, and Friday from 11A.M to 12:30 P.M (c) English--Tuesday and Thursday from 2 to 4 P.M (d) Japenese--Tuesday and Thursday from 1 to 3 P.M (e) Old Norse-Icelandic--Monday only from 12 to 3 P.M Ans. (b) Questions 14-18 (1) Ashland is north of East Liverpool and west of Coshocton (2) Bowling Green is north of Ashland and west of Fredericktown (3) Dover is south and east of Ashland (4) East Liverpool is north of Fredricktown and east of Dover (5) Fredricktown is north of Dover and west of Ashland (6) Coshocton is south of Fredricktown and west of Dover 14. Which of the towns mentioned is furthest to the northwest ? (a) Ashland (b) Bowling Green (c) Coshocton (d) East Liverpool (e) Fredericktown Ans. (b) 15. Which of the following must be both north and east of Fredricktown? (I) Ashland (II) Coshocton (III) East Liverpool (a) I only (b) II only (c) III only (d) I and II (e) I and III Ans. (e) 16. Which of the following towns must be situated both south and west of at least one other town? (a) Ashland only (b) Ashland and Fredricktown (c) Dover and Fredricktown (d) Dover,Coshocton and Fredricktown (e) Dover,Coshocton and East Liverpool Ans. (d) 17. Which of the following statements, if true, would make the information in the numbered statements more specific? (a) Coshocton is north of Dover (b) East Liverpool is north of Dover (c) Ashland is east of Bowling Green (d) Coshocton is east of Fredericktown (e) Bowling Green is north of Fredericktown Ans. (a) 18. Which of the numbered statements gives information that can be deduced from one or more of the other statement? (a) (1) (b) (2) (c) (3) (d) (4) (e) (6) Ans. (c) Questions 19-22 Spelunkers International offers exploring tours in eight caves: Abbott, Benny, Caeser, Dangerfield, Ewell, Fields, Guinness, and Hope (1) Class 1 spelunkers may not attempt cave Ewell, Fields or Hope (2) Class 2 spelunkers may not attempt Hope (3) Class 3 spelunkers may attempt any cave (4) Cave Caesar may be attempted only by spelunkers who have previously explored cave Benny (5) Cave Fields may be attempted only by spelunkers who have previously explored cave Ewell (6) Only two of caves Benny, Caeser, Ewell, Fields, and Hope may be attempted by any explorer in a single tour 19. A class 2 spelunker who has previously explored cave Ewell may be restricted in choosing a tour by which rule(s)? (I) Rule(4) (II) Rule(5) (III) Rule(6) (a) I only (b) II only (c) I and III only (d) II and III only (e) I, II and III Ans. (c) 20. In how many different ways may a class 1 spelunker who has never explored any of the eightcaves before set up a tour of three caves, if she wishes to explore caves Abbott and Caesar? (a) 2 (b) 3 (c) 4 (d) 5 (e) 6 Ans. (b) 21. What is the maximum number of caves that a class 3 spelunker who has previously explored only cave Benny may include in a single tour? (a) 4 (b) 5 (c) 6 (d) 7 (e) 8 Ans. (b) 22. If x + y = 3 and y/x= 2 then y = ? (a) 0 (b) 1/2 (c) 1 (d) 3/2 (e) 2 Ans. (e) 23. How many squares with sides 1/2 inch long are needed to cover a rectangle that is 4 ft long and 6 ft wide (a) 24 (b) 96 (c) 3456 (d) 13824 (e) 14266 24. If a=2/3b , b=2/3c, and c=2/3d what part of d is b/ (a) 8/27 (b) 4/9 (c) 2/3 (d) 75% (e) 4/3 Ans. (b) 25. Successive discounts of 20% and 15% are equal to a single discount of (a) 30% (b) 32% (c) 34% (d) 35% (e) 36 Ans. (b) 26. The petrol tank of an automobile can hold g liters.If a liters was removed when the tank was full, what part of the full tank was removed? (a)g-a (b)g/a (c) a/g (d) (g-a)/a (e) (g-a)/g Ans. (c) 27.If x/y=4 and y is not '0' what % of x is 2x-y (a)150% (b)175% (c)200% (d)250% Ans. (b) 28.If 2x-y=4 then 6x-3y=? (a)15 (b)12 (c)18 (d)10 Ans. (b) 29.If x=y=2z and xyz=256 then what is the value of x? (a)12 (b)8 (c)16 (d)6 Ans. (b) 30. (1/10)18 - (1/10)20 = ? (a) 99/1020 (b) 99/10 (c) 0.9 (d) none of these Ans. (a) 31. Pipe A can fill in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 40 mins.If all of them work together, find the time taken to fill the tank (a) 17 1/7 mins (b) 20 mins (c) 8 mins (d) none of these Ans. (a) 32. Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men work to complete the job? (a) 8 hrs (b) 7 1/2 hrs (c) 7 hrs (d) 9 hrs Ans. (b) 33. Find the smallest number in a GP whose sum is 38 and product 1728 (a) 12 (b) 20 (c) 8 (d) none of these Ans. (c) 34. A boat travels 20 kms upstream in 6 hrs and 18 kms downstream in 4 hrs.Find the speed of the boat in still water and the speed of the water current? (a) 1/2 kmph (b) 7/12 kmph (c) 5 kmph (d) none of these Ans. (b) 35. A goat is tied to one corner of a square plot of side 12m by a rope 7m long.Find the area it can graze? (a) 38.5 sq.m (b) 155 sq.m (c) 144 sq.m (d) 19.25 sq.m Ans. (a)
according to U.N Convention on the "Rights of the Child". Which of the following is not correct? 1. safe drinking water 2. adequate standard of living 3. employment 4. protection from exploitation
please provide me the calculation for the thickness of duplex stainless steel pipeline thickness used in process industry ( Water). The details are given below. Diameter : 3" and 4" Thickness : 3.91mm, SCH40 Operating pressure : 62 bar Operating Temp : 35 degree ASME31.3
How to calculate flow of water delivered by pump when pressure & size of pipe line is given
