Chemtek Scientific Interview Questions and Answers

Only DSa and aptitude was asked

MCQ round on OOPS (java) , JS, C#, SQL(dbms)

Q1. Two DSA questions , Happy Number (leetcode Q.202) , First Unique character in String (leetcode Q.387)
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Q2. Polymorphism, Function Overloading & Overriding (code), Constructor, Access Specifier
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Q3. Project (about nextjs, diff. b/w next & react, advantage of nextjs, SPA, some discussion about tailwind, miui (library), js)
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Q4. DBMS query of second highest employee , find employeeid of manager whose employee name is 'something' (based on self join & only one table)
Ans. 
Use self join in a DBMS query to find the employeeid of the manager whose employee name is 'something'.
• Use a self join on the table to compare employee and manager names

• Order the results by employeeid in descending order to get the second highest employee

• Select the manager's employeeid where the employee name is 'something'
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Q1. VLookup, Sumifs
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Q1. Product & Market Knowledge
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Q1. General Question
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Q1. Industry knowledge and products knowledge
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Tricky questions from js, sql, c#

Q1. Uses of B Tree
Ans. 
B Trees are used for indexing in databases and file systems.
• Used for efficient searching, insertion, and deletion operations in databases.

• Helps in maintaining sorted data for quick retrieval.

• Commonly used in file systems to store large amounts of data efficiently.

• Each node in a B Tree can have multiple children, reducing the height of the tree.
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Q2. What is CTE in sql
Ans. 
CTE stands for Common Table Expression in SQL, used to create temporary result sets that can be referenced within a SELECT, INSERT, UPDATE, or DELETE statement.
• CTEs improve readability and maintainability of complex queries

• CTEs can be recursive, allowing for hierarchical data querying

• CTEs are defined using the WITH keyword followed by the CTE name and query
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Q1. Program to reverse a linked list
Ans. 
Reverse a linked list by changing the next pointers of each node to point to the previous node.
• Start with three pointers: current, prev, and next.

• Iterate through the linked list, updating the next pointers to point to the previous node.

• Update prev, current, and next pointers in each iteration until the end of the list is reached.
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Q2. Puzzles from geeksforgeeks
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Q1. General HR questions like difficulties, strength weakness etc.
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Q1. What is your current role?
Ans. 
I am currently working as a Business Analyst at a technology company.
• Analyzing business processes and requirements

• Creating reports and dashboards for stakeholders

• Collaborating with cross-functional teams to gather and analyze data
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Q2. About basic finance
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Q1. What is hedge fund?
Ans. 
A hedge fund is an investment fund that pools capital from accredited individuals or institutional investors and invests in a variety of assets.
• Hedge funds are typically only available to accredited investors due to their complex and risky nature.

• They often use leverage and derivatives to amplify returns.

• Hedge funds charge both a management fee and a performance fee based on the fund's profits.

• They can invest in a wide...read more
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Q2. What are derivatives ?
Ans. 
Derivatives are financial instruments whose value is derived from an underlying asset or group of assets.
• Derivatives can be used for hedging, speculation, or arbitrage.

• Common types of derivatives include options, futures, forwards, and swaps.

• Derivatives allow investors to take positions on the price movements of assets without owning the assets themselves.

• They are often used to manage risk in financial markets.

• Derivati...read more
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Q1. Why do you wan to change?
Ans. 
Seeking new challenges and opportunities for growth.
• Desire for professional growth and development

• Interest in exploring new industries or sectors

• Seeking a more collaborative work environment

• Opportunity to work on more impactful projects

• Desire for better work-life balance
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Q2. Salary discussion
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Q1. What was your last job profile
Ans. 
I was responsible for managing a team of sales representatives and achieving sales targets.
• Managed a team of sales representatives

• Set and achieved sales targets

• Developed sales strategies

• Provided training and support to team members
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Q2. Hiw many dealera have i appointed/market expansion
Ans. 
I have appointed 15 dealers for market expansion.
• Appointed 15 dealers to expand market presence

• Implemented strategic plans to identify and onboard new dealers

• Regularly monitored dealer performance and provided necessary support

• Successfully increased market reach and sales through dealer network
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Q1. Process Safety, Hazop
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Q2. Unit operations and Unit Process
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Q3. Chemical reaction, Design of Heat Excha
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Q1. Regarding joining and Salary discussion
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