Vishnu Chemicals Interview Questions, Process, and Tips for Freshers

Very easy question but time is not more.

1st Introduction.
2nd Project
3rd Favourite Subject
4th Technical Questions
5th General knowledge
6th Hr round

I am selected in 1st round ,so 2nd time Interview for Technical + Hr

Online test on technical and aptitude with maths

Q1. Your favorite subject
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Q2. What have you learned in your training
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Domain based questions and basic aptitude question

Q1. About distillation column, basic questions ,cooling tower concept.
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Q2. Difference between CSTR and PFR, Pumps ,Heat Exchanger.
Ans. 
CSTR and PFR are types of reactors, pumps are used to move fluids, heat exchangers transfer heat between fluids.
• CSTR (Continuous Stirred Tank Reactor) has a constant volume and operates under steady-state conditions.

• PFR (Plug Flow Reactor) has a varying volume and operates under unsteady-state conditions.

• Pumps are mechanical devices used to move fluids from one place to another, like centrifugal pumps or positive displ...read more
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Q3. What is cracking
Ans. 
Cracking is a process in which complex hydrocarbon molecules are broken down into simpler molecules.
• Cracking is a refining process used to convert large hydrocarbon molecules into smaller, more valuable ones.

• It is done by breaking the carbon-carbon bonds in the molecules.

• Examples include catalytic cracking and steam cracking.
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Q4. What is Reforming
Ans. 
Reforming is a process used in the petroleum industry to convert low-octane naphtha into high-octane gasoline.
• Reforming involves rearranging the molecular structure of hydrocarbons to increase their octane rating.

• It is typically done using a catalyst at high temperatures and pressures.

• The process can also produce hydrogen gas as a byproduct.

• Reforming is an important step in the production of gasoline and other fuels in...read more
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Q5. What is range and approach of cooling tower
Ans. 
The range of a cooling tower refers to the maximum distance at which it can effectively cool air, while the approach is the temperature difference between the cooled water and the entering air.
• Range of a cooling tower is typically around 5-20 degrees Fahrenheit

• Approach of a cooling tower is usually around 8-15 degrees Fahrenheit

• The range and approach of a cooling tower can vary based on factors such as design, size, an
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10 people in one group, topic drone technology

Q1. Modes of Heat transfer
Ans. 
Modes of heat transfer include conduction, convection, and radiation.
• Conduction is the transfer of heat through a material without any movement of the material itself.

• Convection is the transfer of heat through the movement of fluids, such as air or water.

• Radiation is the transfer of heat through electromagnetic waves, such as the heat from the sun.

• Examples of conduction include touching a hot stove or holding a cold dr...read more
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Q2. Design of distillation coloumn
Ans. 
Design of distillation column involves determining the number of trays, column diameter, and feed location.
• The number of trays is determined by the separation required and the reflux ratio.

• Column diameter is determined by the vapor and liquid flow rates.

• Feed location is determined by the composition of the feed and the desired product purity.

• Other factors to consider include pressure drop, heat transfer, and material s...read more
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Q1. If we send you to Jammu will you work
Ans. 
Yes, I am willing to work in Jammu.
• I am open to working in any location assigned to me

• I am adaptable and can adjust to new environments

• I am excited to explore new places and cultures

• I have worked in different cities before and have had positive experiences
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Q2. Tell us more about yourself
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