i am going to appear vedanta written test so plz can any body suggest me for this on madhu.5393@gmail.com

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what are the reaction between sodium meta bi sulphate and chlorine?

1 Answers   Dalkia,

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Name some common causes of control valve noise?

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what is difference between B.Tech. and B.E. in chemical engineering

3 Answers   ONGC, Reliance,

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How can you control the ph level in our cooling water with respect to ammonia contamination?

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What is the best way to handle bend or turns in slurry piping systems?

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What's -74C, dew point is better the -70C dew point In draying unit .

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What types of valves are recommended for slurry services?

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Explain how can you keep our seawater used for heat rejection clean before entering our heat exchangers?

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What step should be taken in process industries if the process variable is oscillating?

0 Answers   HPCL,

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Question 62 – The names of the flow streams could be represented by : H1 for first hot stream, H2 for second hot stream, C1 for first cold stream, C2 for second cold stream. Data of supply temperature Ts in degree Celsius : 150 for H1, 170 for H2, 30 for C1, 30 for C2. Data of target temperature Tt in degree Celsius : 50 for H1, 169 for H2, 150 for C1, 40 for C2. Data of heat capacity Cp in kW / degree Celsius : 3 for H1, 360 for H2, 3 for C1, 30 for C2. (a) Find the enthalpy changes, dH for all streams of flow H1, H2, C1 and C2 in the unit of kW. Take note of the formula dH = (Cp) (Tt - Ts). (b) Match the hot streams H1 and H2 with the suitable cold streams C1 and C2 to achieve the maximum energy efficiency.

1 Answers  

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Question 111 - There are 6 spin orbitals in p subshell in a ground state carbon atom. Only 2 electrons fill the p subshell. Number of different ways for n electrons to occupy the k spin orbitals are k! / [ (n!) (k-n)! ]. Find the number of different configurations of electrons to occupy the p subshell in a carbon atom.

1 Answers  

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