Answer / digital_yogesh

TDS =UP TO 500 AND MAXIMUM 2000
TOTAL HARDNESS = 300 AND MAXIMUM 600
pH = 6.5 TO 8.5

Answer / ram

6.8-7.8

Answer / er. inder amar singh

The TDS reomended for human beaing is less than 100. and the
Ph should be 7.

Answer / vimal

TDS is less than 100,harness 150mg/l & PH is 6.5 to 7.5

What is a good method of minimizing shell side pressure drop in a shell and tube exchanger?

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PROCESS CONTROL - EXAMPLE 6.3 : The differential equation is 3 dy / dt + 2y = 1 with y(0) = 1. (a) The Laplace transformation, L for given terms are : L (dy / dt) = sY(s) - y(0), L(y) = Y(s), L(1) = 1 / s. Use such transformation to find Y(s). (b) The initial value theorem states that : When t approaches 0 for a function of y(t), it is equal to a function of sY(s) when s approaches infinity. Use the initial value theorem as a check to the answer found in part (a).

1 Answers  

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Explain how can you determine the largest impeller that a pump can handle?

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how to calculat suction head in centrifugal pump?

2 Answers   IOCL,

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Explain the factors involved in designing kettle type reboiler?

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hello everyone do anyone have interview questions for any chemical industry please email me at ravijallu.nitj@gmail.com

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I want to know that what type of questions may be come for fertilizer company for written exam?

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Three solid objects of the same material and of equal mass – a sphere, a cylinder (length = diameter) and a cube – are at 5000C initially. These are dropped in a quenching bath containing a large volume of cooling oil each attaining the bath temperature eventually. The time required for 90% change of temperature is smallest for a) cube b) cylinder c) sphere d) equal for all the three whyyyyyyy???????

3 Answers   GATE,

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Question 60 – During the landing process of an airplane, the velocity is constant at v. (a) If the displacement of the plane is x at time t, find the differential equation that relates t, x and v. (b) The plane has 2 parts of wheels – the front and the back, separated by a distance L. The front part of the wheel touches the land first, that allows the straight body of the plane to form an angle T with the horizontal land. If the vertical distance between the back part of the wheel and the horizontal land is y, find the equation of y as a function of L and T. (c) Find the differential equation that relates dy as a function of dt, v and sin T. (d) Find the differential equation that consist of dy as a function of y, L, v and dt. (e) Find the equation of y as a function of v, L, t and C where C is a constant. (f) When t = 0, prove that y = exp C as the initial value of y.

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Please convert 1 kg (mass) of Liquid LPG into Ltrs (volume) of LPG Vapor.

2 Answers   Wak gas,

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Question 69 - A well delivers 225 US-gallons per minute of water to a chemical plant during normal system operation. (a) Calculate its flowrate in the unit of mega US-gallon per day or MGD. (b) The following formula is written next to the chlorine feed point : (chlorine feed rate, lb / day) = (flowrate, MGD) X (dose, mg / L) x (8.34). If this formula is correct, then what should the chlorine feed rate to be in pounds per day (lb / day) if the desired dose is 2 mg / L. (c) Prove by calculations that the constant 8.34 in the formula next to the chlorine feed point is correct. Let 1 US-gallon = 3.78541 L and 1 mg = 0.0000022046 pound.

1 Answers  

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What are the different types of equipments for the conveyance of solids?

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