Air Liquide Shift Engineer Interview Questions and Answers

Q1. Why do you want to join Lanxess?
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Q2. What is your salary expectation?
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Q3. Are you willing to relocate?
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Q4. Do you know about Lanxess?
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Q1. Function of Extruder
Ans. 
An extruder is a machine used to melt and shape plastic or metal into a continuous profile.
• The extruder is used in the manufacturing of products such as pipes, tubing, and wire insulation.

• It works by feeding raw material into a heated barrel where it is melted and then forced through a die to create the desired shape.

• The extruder can be used with a variety of materials including thermoplastics, rubber, and metal alloys
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Q2. Function of weighing vessels
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Weighing vessels are used to measure the weight of substances accurately.
• Weighing vessels are commonly used in laboratories and industries to measure the weight of substances.

• They are designed to hold the substance being weighed and provide accurate measurements.

• Examples of weighing vessels include beakers, flasks, and crucibles.

• They are made of materials such as glass, plastic, or metal depending on the substance bein...read more
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Q3. Function of Engineering Material
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Engineering materials are used to create products that meet specific functional requirements.
• Engineering materials are selected based on their properties such as strength, durability, and conductivity.

• They are used to create products that meet specific functional requirements such as load-bearing structures, electrical circuits, and heat-resistant components.

• Examples of engineering materials include metals, polymers, c...read more
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Q4. How to enhance property of the material?
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To enhance the property of a material, one can modify its composition, structure, or processing techniques.
• Add or remove certain elements to change the material's properties

• Alter the crystal structure to improve strength or conductivity

• Change the processing temperature or pressure to affect the material's properties

• Use surface treatments to improve properties like corrosion resistance

• Combine different materials to crea
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Q5. Basic Maintenance Knowledge
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Q1. Types of unit operations?
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Unit operations are individual steps in a chemical process used to transform raw materials into desired products.
• Mixing: combining two or more substances to create a homogenous mixture (e.g. blending ingredients in baking)

• Separation: dividing a mixture into its individual components (e.g. distillation to separate alcohol from water)

• Heat Transfer: exchanging heat between substances to change temperature or phase (e.g. h...read more
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Q2. Difference between Unit operations & reactions?
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Unit operations involve physical changes in materials, while reactions involve chemical transformations.
• Unit operations involve physical processes like filtration, distillation, and crystallization.

• Reactions involve chemical processes like oxidation, reduction, and hydrolysis.

• Unit operations focus on separating, mixing, or changing the physical state of materials.

• Reactions focus on transforming the chemical composition...read more
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Q1. About Self and family background. Academic and previous job related question.
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Q1. About last company equipment details. Responsibilities of previous plants. About Transformers, Relay, VCB, ACB, Motors and other essential electrical equipment.
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2 h online assesment + recording answers via webcam

Q1. Difference between list and tuple
Ans. 
List is mutable, tuple is immutable in Python.
• List can be modified, tuple cannot be modified

• List uses square brackets [], tuple uses parentheses ()

• List is used for collections of items that may change, tuple is used for fixed collections
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Q1. Azure, C#,Angular ,Aptitude
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Q1. Solid principles, OOPS ,Data analytics, virtualization
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It will be of Medium difficulty

It's is consists of easy questions

Q1. 25 mins on coding 15 mins on aptitude 10 mins on communication
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