Quartesian Interview Questions and Answers

Q1. Basic chemistry
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Q1. General discussion
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Q1. Chemistry nmr, reaction n mechanism
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Array, String are core point for interview, html css , sql will be plus point

Q1. What if you stuck in middle of assign task? how you gonna tackle it
Ans. 
If stuck in the middle of an assigned task, I would follow a systematic approach to tackle it.
• Analyze the problem and identify the specific issue causing the blockage

• Break down the task into smaller subtasks and prioritize them

• Seek help or guidance from colleagues or seniors if necessary

• Research and gather relevant information or resources to overcome the obstacle

• Experiment with different solutions and evaluate their e...read more
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Q1. Anagram of two strings in java
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Java program to check if two strings are anagrams
• Create a function that takes two strings as input

• Convert both strings to character arrays and sort them

• Check if the sorted arrays are equal to determine if they are anagrams
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Q2. Insert and select query in MySQL
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Insert and select data in MySQL using SQL queries
• Use INSERT INTO table_name (column1, column2, ...) VALUES (value1, value2, ...); to insert data

• Use SELECT * FROM table_name; to select all data from a table

• Use SELECT column1, column2 FROM table_name WHERE condition; to select specific data based on a condition
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Q3. Get and Post APIs in rest
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GET and POST are HTTP methods used in REST APIs for retrieving and sending data.
• GET method is used to retrieve data from a server

• POST method is used to send data to a server

• GET requests are idempotent, while POST requests are not

• GET requests should only be used for retrieving data, not for modifying data

• Example: GET request to retrieve a list of users - GET /users

• Example: POST request to create a new user - POST /users
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Q1. What is Real World Evidence?
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Q2. How to get frequency counts?
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Frequency counts can be obtained by counting the number of occurrences of each unique value in a dataset.
• Use the COUNTIF function in Excel to count occurrences of a specific value in a column

• Use the value_counts() function in Python's pandas library to get frequency counts of unique values in a dataframe column

• Use the table() function in R to get frequency counts of unique values in a vector or dataframe column
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