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Ecolab Senior Chemist Interview Questions and Answers
Ecolab Senior Chemist Interview Experiences
1 interview found
(1 Question)
- Q1. What is your current ctc
Interview Preparation Tips
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Interview questions from similar companies
I applied via Company Website and was interviewed before Jan 2021. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. Pumps, Motors & Aerators
- Q2. Working principle of pumps and Aerators
- Ans.
Pumps and aerators are used to move fluids and gases respectively.
Pumps work by creating a pressure difference to move fluids from one place to another.
Aerators introduce air into liquids to increase oxygen levels and promote biological processes.
Types of pumps include centrifugal, positive displacement, and jet pumps.
Types of aerators include surface aerators, diffused aerators, and mechanical aerators.
- Q3. Pump calculation
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Mar 2021. There were 5 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Network, STP, Wet well, Pumping Station related.
- Q2. TECHNICAL STP & WET WELL RELATED
Interview Preparation Tips
Selected
I applied via Referral and was interviewed before Jun 2023. There was 1 interview round.
(2 Questions)
- Q1. Basics of Water Treatment
- Q2. Working Principle of DM Plant
- Ans.
DM Plant removes impurities like salts and minerals from water using ion exchange process.
DM Plant stands for Demineralization Plant.
It uses ion exchange process to remove impurities like salts and minerals from water.
It consists of cation exchange resin and anion exchange resin columns.
Cations and anions in water are exchanged with hydrogen and hydroxyl ions in the resins.
The treated water is then passed through mixed...
Interview Preparation Tips
- Water Treatment
- Waste Water Treatment
I applied via Naukri.com and was interviewed in Feb 2022. There were 3 interview rounds.
(1 Question)
- Q1. Concrete structure and water supply related
(3 Questions)
- Q1. What are your salary expectations?
- Q2. Share details of your previous job.
- Q3. Where do you see yourself in 5 years?
Interview Preparation Tips
Senior Engineer Interview Questions & Answers
Re Sustainability Limited
Anonymous
posted on 10 Dec 2022
I applied via Walk-in and was interviewed before Dec 2021. There were 3 interview rounds.
Detailed information about the previous company where i worked.Discussed with project manager regarding my roles and assignments i had taken on work location.Along with that we discussed about my academic projects and skills that i had mastered in my career
Interviewers gave me the task to elaborate the design of pollution control equipments and assessments
Selected
I applied via Recruitment Consulltant and was interviewed in Oct 2024. There were 3 interview rounds.
(1 Question)
- Q1. Write unit testing for adding two nimbers
- Ans.
Unit testing for adding two numbers
Create a test case with two numbers and expected sum
Call the function that adds two numbers
Assert that the result matches the expected sum
(1 Question)
- Q1. Explain challenge you faced in your last project
(1 Question)
- Q1. Salary expectations
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Campus Placement and was interviewed before May 2022. There were 3 interview rounds.
MCQ based 50 marks 50 questions test.
(3 Questions)
- Q1. Family background
- Q2. Relocation issue
- Q3. Why applied in Ramky
Interview Preparation Tips
I was interviewed before Feb 2021.
(3 Questions)
- Q1. Tell me about yourself.
- Q2. Share details of your previous job.
- Q3. What are your salary expectations?
(2 Questions)
- Q1. Quality site inspection
- Q2. Materials Testing & Third party Inspection
Interview Preparation Tips
Senior Executive Interview Questions & Answers
Re Sustainability Limited
Anonymous
posted on 17 Jan 2021
I applied via Naukri.com and was interviewed in Dec 2020. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. 1. Introduction
- Q2. 2. Describe your job profile
- Q3. 3. What do you know about company
Interview Preparation Tips
1. Self Introduced
2. Your current job profile
3. Daily work routine
4. About company
5. Why you want to change
6. Why should company hire your
7. Expected CTC
8. How much time you will take to join...etc
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Ecolab Senior Chemist Interview Process
based on 1 interview
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