Rentokil Initial Operations Executive Interview Questions and Answers

Q1. Details of previous process
Ans. 
The previous process involved a manual system for data entry and tracking.
• Data was entered manually into spreadsheets

• Tracking of progress was done through email communication

• There was no automated system for generating reports

• The process was time-consuming and prone to errors
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Q2. Details of pump. Pump NPSH
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Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Share details of your previous job.
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Q4. Why are you looking for a change?
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Q5. Where do you see yourself in 5 years?
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Q6. What are your strengths and weaknesses?
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Q7. Tell me about yourself.
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Q1. Process related
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Q2. Tell about your process
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My process involves analyzing current operations, identifying areas for improvement, implementing changes, and monitoring results.
• Analyze current operations to identify inefficiencies

• Develop strategies for improvement

• Implement changes and monitor results

• Regularly review and adjust processes as needed
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Q1. Tell me about yourself
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Q2. Can you provide details about your work experience?
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Experienced executive with a strong background in strategic planning, team leadership, and operational excellence across various industries.
• Led a team of 50 in a tech startup, increasing revenue by 30% within two years through innovative product development.

• Implemented a new supply chain strategy in a manufacturing firm, reducing costs by 15% and improving delivery times by 20%.

• Spearheaded a corporate restructuring ini...read more
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Basic questions of engineering

Q1. Details about chemicals and process
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Q2. Details of HAZOP study
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Q3. What is permit system
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A permit system is a formal process for granting permission to perform a specific task or activity.
• Permit systems are commonly used in industries such as construction, mining, and manufacturing to ensure safety and compliance with regulations.

• Permits may be required for activities such as hot work, confined space entry, or working at heights.

• The permit system typically involves a written document outlining the work to ...read more
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Q4. How to calculate LMTD
Ans. 
LMTD is calculated using the formula (ΔT1 - ΔT2) / ln(ΔT1 / ΔT2)
• Calculate the temperature differences between the hot and cold fluids at the inlet and outlet of the heat exchanger

• Subtract the temperature difference of the cold fluid from the temperature difference of the hot fluid

• Take the natural logarithm of the ratio of the two temperature differences

• Divide the difference in temperature by the natural logarithm value...read more
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Q5. Calculation of cooling tower
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Cooling tower calculation involves determining the heat load, water flow rate, and cooling tower efficiency.
• Calculate heat load by determining the difference in temperature between the hot water entering and the cooled water exiting the tower.

• Determine water flow rate based on the heat load and the specific heat capacity of water.

• Calculate cooling tower efficiency by comparing the actual heat rejected to the maximum po...read more
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Q1. Basic of instrumentation (rtd, control valve, flow
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Q1. DCS related questions
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Q1. DCS architecture
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Q1. Salary discussion
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Q2. Fix salary offered
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Q1. What about RFQ?
Ans. 
RFQ stands for Request for Quotation, a document used in procurement to invite suppliers to submit a bid for products or services.
• RFQ is used in procurement to gather pricing information from suppliers.

• It outlines the specifications, quantities, and terms of the products or services needed.

• Suppliers respond with their pricing and other relevant information to compete for the contract.

• RFQs are commonly used in industrie...read more
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Q1. Mass transfer operations ?
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Q2. Distillation and its types ?
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Distillation is a process of separating components of a mixture based on their boiling points.
• There are two main types of distillation: batch distillation and continuous distillation.

• Batch distillation involves separating a mixture into its components in a single batch, while continuous distillation involves separating a mixture into its components over a continuous process.

• Examples of distillation include the separati...read more
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