Cohance Lifesciences Scientist Interview Questions and Answers

Sql coding + project discussion

Q1. Difference between List and Tuple?
Ans. 
List is mutable, Tuple is immutable in Python.
• List can be modified after creation, Tuple cannot be modified

• List is defined using square brackets [], Tuple is defined using parentheses ()

• Example: list_example = [1, 2, 3], tuple_example = (4, 5, 6)
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Q2. Define a sales forecasting approach?
Ans. 
Sales forecasting approach is a method used to predict future sales based on historical data and market trends.
• Sales forecasting can be done using quantitative methods like time series analysis or qualitative methods like expert opinion.

• It involves analyzing past sales data, market trends, and other relevant factors to predict future sales.

• Different approaches include moving average method, exponential smoothing, regre...read more
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Q1. What is difference between validation and qualification
Ans. 
Validation ensures that the system meets the user's needs, while qualification ensures that the system is installed and operates correctly.
• Validation confirms that the system meets the user's requirements and expectations.

• Qualification ensures that the system is installed correctly and operates within predefined specifications.

• Validation is more focused on user needs and expectations, while qualification is more focuse...read more
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Q2. What is GLP and data integrity
Ans. 
GLP stands for Good Laboratory Practice, which ensures the reliability and integrity of data generated in a laboratory setting.
• GLP is a set of guidelines for conducting non-clinical safety studies on chemicals, pharmaceuticals, and other products.

• It includes requirements for the organization, personnel, facilities, equipment, and documentation of studies.

• Data integrity refers to the accuracy, completeness, and reliabil...read more
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Q1. What is HPLC and GC
Ans. 
HPLC and GC are analytical techniques used in chemistry to separate and analyze compounds in a mixture.
• HPLC stands for High Performance Liquid Chromatography, which uses a liquid mobile phase to separate compounds based on their interactions with a stationary phase.

• GC stands for Gas Chromatography, which uses a gas mobile phase to separate compounds based on their volatility and interactions with a stationary phase.

• Bot...read more
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Q1. Have you make any Down payment
Ans. 
Yes, I have made a down payment on my car loan.
• Yes, I made a down payment of 20% on my car loan.

• The down payment helped lower my monthly payments.

• I saved up for the down payment over several months.
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Q2. Did you come across any situation like aging invoices pending to process and how you clear that
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Q1. What ever I was mentioning in my resume from toward the questions
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Q2. Explain about UV, IR, KF, polarimeter with principle and functions
Ans. 
UV, IR, KF, and polarimeter are analytical instruments used for different types of analysis based on principles of light absorption, emission, and rotation.
• UV (Ultraviolet) spectrophotometer measures the absorption of ultraviolet light by a sample to determine its concentration or purity.

• IR (Infrared) spectrophotometer measures the absorption of infrared light by a sample to identify functional groups in organic compou...read more
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Q3. Calibration of analytical balance
Ans. 
Calibration of analytical balance is essential for accurate measurements in analytical chemistry.
• Calibration involves comparing the readings of the balance to known weights.

• Regular calibration ensures accuracy and reliability of measurements.

• Adjustments may be needed if the balance readings deviate from the known weights.

• Calibration should be done using a proper calibration weight and following manufacturer's instructi...read more
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Q4. What is the range of PH and explain about calibration
Ans. 
PH range is 0-14. Calibration ensures accuracy by adjusting the PH meter to known standards.
• PH range is from 0 to 14, with 7 being neutral

• Acidic solutions have a PH below 7, while alkaline solutions have a PH above 7

• Calibration involves adjusting the PH meter using buffer solutions of known PH values

• Regular calibration ensures accurate PH measurements
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Q1. Waiting for HR round
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Q1. Everything given in CV
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Q1. Work experience and past achievements
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Q1. Salary negotiation and other stuff
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