Oil And Natural Gas Corporation Summer Intern Interview Questions and Answers

Numerical and literacy test. Not too difficult

Q1. Why do want to work in the energy sector
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Q1. Given a case study, how would you take this problem.
Ans. 
To take a problem from a case study, I would follow a structured approach.
• Read and understand the case study thoroughly

• Identify the problem statement and define the scope

• Gather relevant data and information

• Analyze the data and identify the root cause of the problem

• Brainstorm and evaluate potential solutions

• Select the best solution and develop an action plan

• Implement the solution and monitor the results

• Make necessary ad
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Q2. Hackerrank coding question
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Q1. It was an on-campus opportunity
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Q1. Types of reactors
Ans. 
Types of reactors include batch, continuous stirred-tank, plug flow, and fluidized bed reactors.
• Batch reactors operate in a closed system with a fixed amount of reactants.

• Continuous stirred-tank reactors have continuous flow of reactants and products.

• Plug flow reactors have a continuous flow with no mixing along the length of the reactor.

• Fluidized bed reactors use a fluid to suspend solid particles, allowing for better
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Q2. Types of valves
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Valves are devices used to control the flow of fluids or gases in a system by opening, closing, or partially obstructing passageways.
• Types of valves include ball valves, gate valves, globe valves, butterfly valves, check valves, and pressure relief valves.

• Ball valves have a spherical closure unit that allows for quick on/off control of flow.

• Gate valves have a gate-like disc that moves up and down to control flow.

• Globe ...read more
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Q3. Question related to resume
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Q1. First they shortlisted on the cgpa basis. Then technical + hr round was there. In which they ask for favourite subjects and all the question was from the same subject
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Q2. What will happen if we add petrol in diesel engine
Ans. 
Adding petrol in a diesel engine can cause damage to the engine and reduce its efficiency.
• Petrol has lower lubricating properties than diesel, leading to increased wear and tear on engine components.

• Petrol can cause damage to the fuel injection system and fuel pump.

• The engine may misfire or stall due to the different combustion properties of petrol and diesel.

• Running a diesel engine on petrol can result in overheating ...read more
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It was easy, regular aptitude test

Q1. In a shell and tube heat exchanger, where does a toxic fluid go into?
Ans. 
Toxic fluid in a shell and tube heat exchanger goes into the tube side.
• Toxic fluid is typically directed into the tubes of the heat exchanger.

• This is done to prevent contamination of the environment or other fluids in the system.

• Examples include chemical processing plants where toxic fluids need to be cooled or heated efficiently.
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Q2. What is the third law of thermodynamics ?
Ans. 
The third law of thermodynamics states that the entropy of a perfect crystal at absolute zero is zero.
• The third law of thermodynamics states that as the temperature of a system approaches absolute zero, the entropy of the system also approaches zero.

• It is impossible to reach absolute zero in practice, but this law helps in understanding the behavior of systems at extremely low temperatures.

• This law is important in the ...read more
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First Round was an Aptitude + Technical Online test.
Questions were easy but time was limited.

Q1. Technical + HR Interview They asked me about my favorite subjects of the last semesters and grilled me on that. - I chose distillation(mass transfer) so about the basic principle which governs distillation...read more
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