Nagarjuna Cements Chemist Quality Control Interview Questions and Answers

Q1. Bricks type and brick water absorption capacity
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Q2. Quality lab and site test of concrete
Ans. 
Quality lab and site test of concrete involves testing the strength, durability, and consistency of concrete samples.
• Quality lab tests include compressive strength test, slump test, air content test, and temperature test.

• Site tests involve sampling concrete from the construction site, conducting field tests like slump test and air content test, and monitoring curing conditions.

• Quality engineers ensure that concrete mee...read more
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Q3. Pile foundation test, rebound hummer, uv test
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Q4. Silt content test
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Q5. Aggregate test flakiness and elongation test
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Q1. Technical asked jm ushn hehe yen’s unable
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Q2. Concrete technology reinforcement
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Q1. Example of qa & qc
Ans. 
QA (Quality Assurance) focuses on preventing defects in the process, while QC (Quality Control) focuses on identifying defects in the product.
• QA involves processes and procedures to ensure quality standards are met

• QC involves testing and inspection to identify defects in the product

• Example: QA - creating test plans, QC - executing test cases
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Q1. Rolling Margin of Steel
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Q2. Thickness of plaster for different surface
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Q3. Dimension tolerance of brick
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Q4. Cement testing IS code
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Q5. AAC block grade
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Is Code 4031 covers parts 1-6 related to cement, Is Code 2386 pertains to part 5, Is 383 specifies limits, the 1199 slump cone is used for concrete comprehensive strength testing, Is 10262 outlines mix design, Is 456 addresses plain and reinforced concrete, Is 516 focuses on the comprehensive strength of cubes, Is 2185 refers to AAC blocks, and Is 4990 relates to plywood shuttering.

Q1. What is concrete?
Ans. 
Concrete is a strong and durable building material made from a mixture of cement, sand, gravel, and water.
• Made from a mixture of cement, sand, gravel, and water

• Used in construction for buildings, roads, bridges, etc.

• Hardens over time to become strong and durable

• Can be reinforced with steel bars for added strength
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Q2. What is the cement
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Cement is a binding material used in construction to hold together bricks, stones, and other materials.
• Cement is a fine powder made from a mixture of limestone, clay, and iron ore.

• When mixed with water, cement forms a paste that hardens and binds materials together.

• There are different types of cement such as Portland cement, white cement, and rapid-hardening cement.
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Q3. Admixture kiu use krte h
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Q4. Coarse aggregate limt mor than
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Q5. Compaction test kiu krte h
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Q1. About salary and experience
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Q1. Chiller trouble shooting
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Q2. Work of cchiller
Ans. 
A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle.
• Chillers are commonly used in air conditioning systems to cool buildings or industrial processes.

• They work by transferring heat from the liquid being chilled to a separate fluid, which is then circulated through a heat exchanger to cool it down.

• Chillers can be water-cooled or air-cooled, depending on the app
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Q3. Alarm and solutions
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Q4. Controlling andetc
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Salary and job responsibilities

Q1. Brief about my work experience
Ans. I explained my experience in Highways & structures
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