SABIC Interview Questions, Process, and Tips

Q1. How to design the diameter of distillation column
Ans. 
The diameter of a distillation column is designed based on factors such as feed flow rate, composition, pressure, and efficiency.
• Calculate the required vapor and liquid flow rates based on the feed composition and desired separation efficiency.

• Consider the pressure drop along the column and the desired residence time for the vapor and liquid phases.

• Use design equations and correlations to determine the optimal diameter...read more
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Q2. How to calculate no of trays and reflux ratio?
Ans. 
Number of trays and reflux ratio can be calculated using various methods such as McCabe-Thiele method or Fenske equation.
• Use McCabe-Thiele method for distillation columns to determine number of trays required.

• Calculate reflux ratio by dividing the liquid returning to the column by the liquid leaving the top tray.

• Consider factors such as desired separation efficiency and operating conditions when determining number of t
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Q3. Tray vs packing?
Ans. 
Tray is used for organizing items while packing is the process of placing items in a container for transportation or storage.
• Tray is typically used for organizing small items or serving food, while packing involves placing items in a container for transportation or storage.

• Trays can come in various sizes and materials, such as plastic, metal, or wood, while packing materials can include boxes, bags, or containers.

• Examp...read more
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Q4. How to calculate p drop in a pipe
Ans. 
To calculate pressure drop in a pipe, use the Darcy-Weisbach equation or the Hazen-Williams equation.
• Use the Darcy-Weisbach equation: ΔP = f * (L/D) * (ρ * V^2) / 2

• Use the Hazen-Williams equation: ΔP = 10.67 * Q^1.85 / (C^1.85 * D^4.87)

• Where ΔP is the pressure drop, f is the Darcy friction factor, L is the pipe length, D is the pipe diameter, ρ is the fluid density, V is the fluid velocity, Q is the flow rate, and C is...read more
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Q5. Explain le chatelier principle
Ans. 
Le Chatelier's principle states that a system at equilibrium will respond to a stress by shifting to counteract the stress and restore equilibrium.
• If a stress is applied to a system at equilibrium, the system will adjust to minimize the effect of the stress.

• Changes in concentration, pressure, or temperature can cause a shift in equilibrium.

• For example, if more reactants are added to a system at equilibrium, the system ...read more
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Q1. Tell me the parts of scaffolding.. What is the purpose of cross bracing..
Ans. 
Scaffolding parts include standards, ledgers, transoms, and cross braces. Cross bracing provides lateral stability to the scaffold.
• Scaffolding parts: standards, ledgers, transoms, and cross braces

• Cross bracing prevents lateral movement of the scaffold

• Cross braces should be installed diagonally in both directions for maximum stability
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Q2. How can we find out that scaffold for heavy load or lite load.
Ans. 
The load capacity of a scaffold can be determined by its design and specifications.
• Check the manufacturer's specifications for the scaffold

• Consider the weight of the materials and equipment that will be placed on the scaffold

• Ensure that the scaffold is designed and constructed to meet the load requirements

• Consult with a qualified engineer or scaffold designer if necessary
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The value of pi and its applications.

Q1. What are the types and classifications of gears?
Ans. 
Gears are classified based on their shape, size, and arrangement. Common types include spur, helical, bevel, worm, and rack gears.
• Spur gears: most common type, teeth are straight and parallel to the gear axis

• Helical gears: teeth are angled in a helix around the gear axis, providing smoother and quieter operation

• Bevel gears: used to transmit motion between intersecting shafts, teeth are conically shaped

• Worm gears: consi...read more
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Q1. Talk about yourself in one and a half minutes
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Q2. Can you tell us about a significant achievement during your last work experience
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Q3. Can you tell us about challenges you faced during your work experience
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Q4. Do you prefer to work alone or with a team?
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Q1. Your achievements
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Q2. We are only interested in your achievements
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