Laurus Labs Quality Control Analyst Interview Questions, Process, and Tips

Q1. What is pH meter? Explain range of its ?
Ans. 
A pH meter is a scientific instrument used to measure the acidity or alkalinity of a substance.
• Measures the concentration of hydrogen ions in a solution

• Range typically from 0 to 14, with 7 being neutral

• Used in various industries such as food and beverage, pharmaceuticals, and environmental monitoring
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Q2. Principle of HPLC and working principle?
Ans. 
HPLC is a chromatographic technique used to separate, identify, and quantify components in a mixture based on their interactions with a stationary phase and a mobile phase.
• HPLC stands for High Performance Liquid Chromatography.

• It involves passing a liquid sample through a column packed with a stationary phase, where different components interact differently and are separated based on their affinity for the stationary p...read more
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Q1. Introduce yourself? Tell me about your family background?
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Q2. Your current CTC and expected CTC?
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Q1. What's principal of HPLC
Ans. 
HPLC stands for High Performance Liquid Chromatography, a technique used to separate, identify, and quantify components in a mixture.
• HPLC involves a stationary phase, a mobile phase, and a detector.

• The sample is injected into the system and carried by the mobile phase through the stationary phase.

• Different components in the sample interact differently with the stationary phase, leading to separation.

• The detector measur...read more
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Q2. What's Dissolution stages
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Dissolution stages refer to the different phases in which a solid substance dissolves in a liquid medium.
• Dissolution begins with the solid substance breaking down into smaller particles

• The smaller particles then disperse in the liquid medium

• Finally, the particles fully dissolve and become uniformly distributed in the liquid
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Q3. What's ALCOA+++?
Ans. 
The full form of ALCOA + is Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, and Available.
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Q4. What is UV and Visible Range?
Ans. 
UV and visible range refer to the wavelengths of electromagnetic radiation that are visible to the human eye.
• UV range typically refers to wavelengths between 10-400 nm, while visible range refers to wavelengths between 400-700 nm.

• UV radiation is divided into UVA (315-400 nm), UVB (280-315 nm), and UVC (100-280 nm).

• Visible light is the portion of the electromagnetic spectrum that is visible to the human eye and includes...read more
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Q5. What's Normality, Molarity and Molality?
Ans. 
Normality, Molarity, and Molality are different units of concentration used in chemistry.
• Normality is the number of equivalents of a substance dissolved in a liter of solution.

• Molarity is the number of moles of solute per liter of solution.

• Molality is the number of moles of solute per kilogram of solvent.

• Normality is used in acid-base reactions, while Molarity and Molality are more commonly used in general chemistry.

• Ex...read more
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Q6. What's S1, S2 and S3 in dissolution?
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Q7. What's Q stands for in Dissolution?
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Q8. What's OOS and OOT?
Ans. 
OOS stands for Out of Specification and OOT stands for Out of Trend.
• OOS refers to a result that falls outside the acceptance criteria specified in the test procedure.

• OOT refers to a result that shows a trend outside the expected range over time.

• Both OOS and OOT results may indicate potential issues with the quality or consistency of the product being tested.
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Q1. Tell me something about yourself
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Q2. What's your strength
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Q3. What's your weakness
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Q4. Why do you want to switch your current job?
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Q5. Do you have any questions for us?
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Q1. Tell me something about your self
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Q2. What is uv principal
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Q3. My name is amol ramdas sonne from aurangabads in Maharashtra there are four members in my family my father is farmer my mother is house wife my brother is transport owner I have one year experience in ipc...read more
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Q4. The Principle of UV-Visible Spectroscopy is based on the absorption of ultraviolet light or visible light by chemical compounds, which results in the production of distinct spectra. Spectroscopy is based o...read more
Ans. 
UV-Visible Spectroscopy is based on the interaction between light and matter resulting in the production of distinct spectra.
• UV-Visible Spectroscopy is a non-destructive technique used to determine the concentration of a sample.

• It is widely used in the pharmaceutical industry to analyze drug compounds.

• The spectra produced can be used to identify unknown compounds and monitor chemical reactions.

• UV-Visible Spectroscopy i...read more
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Arthametic and reasoning

Multiple choice questions test.