LANXESS India Private Limited Instrument Engineer Interview Questions, Process, and Tips

Q1. What is depreciation
Ans. 
Depreciation is the allocation of the cost of a tangible asset over its useful life.
• Depreciation is a non-cash expense that reduces the value of an asset over time.

• It reflects the wear and tear, obsolescence, or decrease in value of the asset.

• Common methods of calculating depreciation include straight-line, double declining balance, and units of production.

• Example: A company purchases a delivery truck for $50,000 with ...read more
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Q2. What is accrual
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Accrual refers to the recognition of revenues and expenses when they are incurred, regardless of when cash is exchanged.
• Accrual accounting matches revenues with expenses in the same accounting period, even if cash has not been exchanged.

• Accruals are used to provide a more accurate representation of a company's financial position and performance.

• Examples of accruals include accounts receivable, accounts payable, and acc
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Market experience & implementation

Establishing products brands to increase all products sale to each individuals end-users customers in every market, recommended crops & all seasons

Increase Sales with minimum DSO

Q1. How did you ever feel like you were going to fail at something?
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Q1. Tell about the pervious experience ? why you join BASF
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Q1. Tell me about pervious work process in software's
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Q1. General question reviewing resume
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Q1. Fitment in the LIFE based value. You can undrstand more from the HR during 2nd round of discussion
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Q1. Lots of technical questions
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Q2. How many points need inspection
Ans. 
The number of points that need inspection varies depending on the specific context and requirements.
• The number of points needing inspection can be determined by the scope of the analysis or evaluation.

• Factors such as the size of the dataset, complexity of the data, and specific objectives of the analysis can influence the number of points to inspect.

• For example, in a quality control process, a certain percentage of pro...read more
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Q3. Is tml important for maintenance
Ans. 
Yes, Total Maintenance Loss (TML) is important for maintenance as it helps in identifying critical equipment and prioritizing maintenance activities.
• TML is a key performance indicator used to measure the overall maintenance effectiveness of a system or equipment.

• It helps in identifying equipment that is causing the most downtime or losses in production.

• By analyzing TML, maintenance teams can prioritize their efforts on...read more
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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?
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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?
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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
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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
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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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