Indian Oil Corporation Data Scientist Interview Questions and Answers

Q1. Gtky and your projects
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Hypothetical case was given and was told to solve it .

Q1. Managerial round where they look at your fit in the org
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Q1. Techincal 1
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Q2. With some python questions to write logical codes
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Q1. More about business context problems. Asked real time challenges in the business and expected solution for it.
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Q2. Technical 2
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Real time Business case study on implementing retail outlets and how. Speak more about data assumption and implementation of model

Q1. Stake holder management, conflict in team etc
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Q2. Behavioral
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Q1. General questions with package discussion
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Q2. HR
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Q1. Cfd questions like forward difference scheme and backward difference scheme.
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Q2. In which direction the fluid flows in a vertical pipe when the pressures at two vertical locations are given.
Ans. 
The direction of fluid flow in a vertical pipe depends on the pressure difference between two vertical locations.
• Fluid flows from high pressure to low pressure.

• If the pressure at the lower location is higher than the pressure at the upper location, the fluid will flow downwards.

• If the pressure at the upper location is higher than the pressure at the lower location, the fluid will flow upwards.

• The magnitude of the press...read more
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Q1. About Work experience
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Q2. How do you handle a negative outcome?
Ans. 
I handle negative outcomes by analyzing the root cause and identifying potential solutions.
• I remain calm and objective to avoid making hasty decisions.

• I review the data and identify the root cause of the negative outcome.

• I brainstorm potential solutions and evaluate their feasibility.

• I implement the best solution and monitor its effectiveness.

• I use the experience as a learning opportunity to improve future outcomes.
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Q3. What are the factors that demotivates you in work?
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Q1. Questions based on Bernoullis principle.
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Q2. How to find if a point is inside or outside of a regular polygon?
Ans. 
To find if a point is inside or outside of a regular polygon, we can use the Ray Casting algorithm.
• Draw a line from the point to a point outside the polygon

• Count the number of times the line intersects with the polygon edges

• If the number of intersections is odd, the point is inside the polygon

• If the number of intersections is even, the point is outside the polygon
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Q3. Coding questions by the specialist in US.
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3 questions on various problems based on arrays and matrices.

Q1. Basic data science and statistics interview questions along with their mathematical understanding.
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Q1. Data science questions with mathematical understanding
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Q1. STAR type questions
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Q1. Questions on NLP frameworks, feature engineering, decision tree, dimensionality reduction techniques.
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Q1. All analysis questions, missing values imputation, graph plotting, ML Mathematics and few python language questions.
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Q1. What is poroosity
Ans. 
Porosity is the measure of empty spaces in a material, often used in geology and engineering.
• Porosity is the ratio of void spaces to total volume in a material.

• It is expressed as a percentage.

• Porosity is important in fields like geology for assessing rock formations and in engineering for determining the strength of materials.

• Examples of porous materials include sponges, pumice stones, and aerogels.
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Q2. What is permeability
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Permeability is the property of a material that allows fluids or gases to pass through it.
• Permeability is a measure of how easily a substance can pass through a material.

• It is often used in geology to describe how easily fluids can flow through rocks or soil.

• Permeability can be affected by factors such as pore size, connectivity, and fluid viscosity.

• Materials like sandstone have high permeability, while materials like
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Q3. Why you want this job
Ans. 
I am passionate about helping others and believe this job will allow me to make a positive impact in the community.
• I have a strong desire to contribute to the well-being of others

• I am excited about the opportunity to work in a team-oriented environment

• I am eager to learn and grow in my career
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Q4. Oil shale vs shale oil differnece
Ans. 
Oil shale is a rock containing kerogen that can be converted into shale oil through a process called retorting.
• Oil shale is a sedimentary rock containing kerogen, a precursor to oil.

• Shale oil is the liquid hydrocarbons extracted from oil shale through a process called retorting.

• Oil shale deposits are found in various countries like the United States, Estonia, and China.

• Shale oil production has increased in recent years
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Q5. Unconventional reservoir
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