Nalco Interview Questions, Process, and Tips

Q1. Why you doing your internship in this domain?
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Q2. Introduction yourself
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Written test on general knowledge

Q1. It was on education, general knowledge and on stores and purchase functions.
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Q1. There was no round 3 interview
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Q1. Finance related technical interview related to Csr provisions
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Q1. HR related interviews
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Aptitude ,reasoning,english questions of mcq type

Q1. What is steel ,what is cast iron,difference between steel and cast iron
Ans. 
Steel and cast iron are both alloys of iron, but with different carbon content and properties.
• Steel is an alloy of iron and carbon, with a carbon content of less than 2%. It is stronger, more ductile, and more malleable than cast iron.

• Cast iron is an alloy of iron, carbon, and silicon, with a carbon content of 2-4%. It is more brittle and less malleable than steel.

• Steel is used in construction, machinery, and tools, wh...read more
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Q2. What are the laws of thermodynamics,what is entropy
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The laws of thermodynamics describe the behavior of energy in a system. Entropy is a measure of the disorder or randomness in a system.
• The first law states that energy cannot be created or destroyed, only transferred or converted.

• The second law states that the total entropy of a closed system will always increase over time.

• The third law states that as temperature approaches absolute zero, the entropy of a system approa...read more
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Q1. 1.Expected salry , 2.why u choose 3. What u aspected from our side
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Q2. Whatvyour expectations from our end
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Q3. Only learning or another thing
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Q1. How to extract aluminium from bauxite
Ans. 
Aluminium is extracted from bauxite through the Bayer process which involves crushing, digestion, precipitation, and calcination.
• Bauxite is first crushed into small pieces

• The crushed bauxite is then mixed with a hot caustic soda solution in a digester vessel

• The resulting slurry is filtered to remove impurities

• The filtered solution is then cooled and aluminium hydroxide is precipitated

• The precipitated aluminium hydroxid...read more
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Q2. What are the inputs for blast furnace
Ans. 
Inputs for blast furnace include iron ore, coke, limestone, and hot air.
• Iron ore is the primary input and is usually in the form of hematite or magnetite

• Coke is a fuel used to heat the furnace and is made from coal

• Limestone is added to remove impurities and create slag

• Hot air is blown into the furnace to increase the temperature

• Other inputs may include scrap metal, fluxes, and additives
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