Chemex Oil Interview Questions and Answers

Q1. Can't remember the question
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Q2. Can't recall the question
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If everyone is cheating you should also do it?

Q1. Everyhting about project..
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Q2. Linear vs logistic regression
Ans. 
Linear regression is used for continuous variables, while logistic regression is used for binary outcomes.
• Linear regression is used to predict a continuous outcome based on one or more input variables.

• Logistic regression is used to predict the probability of a binary outcome based on one or more input variables.

• Linear regression assumes a linear relationship between the independent and dependent variables, while logist...read more
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Q3. Normalization in dbms
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Normalization in DBMS is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down data into smaller, more manageable tables and establishing relationships between them.

• It helps in reducing data redundancy, minimizing data anomalies, and improving data consistency.

• There are different normal forms such as 1NF, 2NF, 3NF, BCNF, and 4NF, each with spec...read more
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Q4. List array difference etc
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Array difference is finding the elements that are present in one array but not in another.
• Use set operations like difference to find elements in one array but not in another.

• Example: arr1 = ['a', 'b', 'c'], arr2 = ['b', 'c', 'd'], arr_diff = set(arr1) - set(arr2) = ['a']
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Q1. How many experience in army?
Ans. 
I have 5 years of experience in the army.
• Served in the army for 5 years

• Received training in various military operations

• Developed leadership and organizational skills

• Worked in a team-oriented environment
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Q2. How much knowledge do you have in politic ?
Ans. 
I have a good understanding of politics and stay updated on current events and policies.
• I have a degree in Political Science which has provided me with a strong foundation in political theory and governance.

• I actively follow political news and developments, both domestically and internationally.

• I have experience working in government offices where I had to navigate political processes and policies.

• I have participated i...read more
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Relevant area synapses of preparation through PPT

Q1. Relevant field with the technical
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Q2. Experience in relevant previously work areaS
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Q1. Salary Part with negotiation
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Q2. Medical check up
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Q1. Dumb HR will ruin the company or maybe they behave how the company wants them to behave.
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Medium leetcode question related to dp.

LLD round to create a cache library

Q1. Design Paytm like system
Ans. 
Design a system similar to Paytm for online payments and transactions.
• Implement user authentication and authorization for secure transactions

• Develop a user-friendly interface for easy navigation and transactions

• Integrate various payment options like credit/debit cards, net banking, UPI, and wallets

• Implement a robust backend system to handle transactions and store user data securely
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Q2. Design Url Shortner
Ans. 
Design a URL shortener service to generate short URLs for long URLs.
• Use a unique identifier for each long URL to generate a short URL.

• Implement a mapping system to map short URLs to long URLs.

• Consider implementing features like custom short URLs, expiration dates, and analytics.

• Ensure the short URLs are unique and not easily guessable.

• Optimize the service for performance and scalability.
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Q1. Basic beaviour question.
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Q2. Design Notification Service.
Ans. 
Design a Notification Service for sending alerts to users.
• Define types of notifications (email, SMS, push notifications)

• Implement a system for users to subscribe/unsubscribe from notifications

• Include a scheduling system for sending notifications at specific times

• Consider implementing a notification history for users to view past alerts
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Q1. Name and work and who are you
Ans. 
I am a trainee at XYZ Company, currently working on various projects under the guidance of senior team members.
• Trainee at XYZ Company

• Working on various projects

• Under the guidance of senior team members
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Q2. What about your self and about
Ans. 
I am a dedicated and hardworking individual with a passion for learning and growth.
• I have a strong work ethic and am always eager to take on new challenges.

• I am a quick learner and adapt well to new environments.

• I am detail-oriented and strive for excellence in everything I do.
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Q1. Presented company details
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Quantity, Date &time, direction, boat speed, train question

Q1. Civil engineering basics
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Q1. Self-introduction, willingness to join company, about company
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