Quality Control Officer

200+ Quality Control Officer Interview Questions and Answers

Updated 7 Jul 2025
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3d ago

Q. Wt is pharmacy? Which type of chemicals we are used in pharmaceutical company?

Ans.

Pharmacy is the science and technique of preparing, dispensing, and reviewing drugs and providing additional clinical services.

  • Pharmacy involves the preparation and dispensing of drugs

  • Pharmaceutical companies use various types of chemicals such as active pharmaceutical ingredients (APIs), excipients, and solvents

  • APIs are the main active ingredients in a drug that provide the therapeutic effect

  • Excipients are inactive substances that help deliver the drug to the body

  • Solvents ar...read more

2d ago

Q. Wt is ph ? Wt is quality control and wt is quality assurance?

Ans.

pH is a measure of acidity or alkalinity. Quality control ensures products meet standards. Quality assurance ensures processes meet standards.

  • pH is a measure of the concentration of hydrogen ions in a solution, indicating its acidity or alkalinity

  • Quality control involves inspecting and testing products to ensure they meet predetermined standards

  • Quality assurance focuses on ensuring that processes and procedures are in place to consistently produce products that meet quality s...read more

Quality Control Officer Interview Questions and Answers for Freshers

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Asked in Lupin

6d ago

Q. Which type of stationary phase is used in HPLC?

Ans.

The stationary phase used in HPLC can be either polar or non-polar.

  • Polar stationary phases are used for separating polar compounds, while non-polar stationary phases are used for separating non-polar compounds.

  • Common polar stationary phases include silica gel and alumina, while common non-polar stationary phases include C18 and C8.

  • The choice of stationary phase depends on the properties of the sample being analyzed and the desired separation.

  • The stationary phase is typically ...read more

3d ago

Q. What is therapeutic effect? And what is the abbreviation of GDP?

Ans.

Therapeutic effect refers to the positive impact of a medical treatment on a patient's health. GDP stands for Good Distribution Practice.

  • Therapeutic effect is the desired outcome of a medical treatment

  • It can be measured by improvements in symptoms or overall health

  • For example, the therapeutic effect of an antibiotic is the elimination of an infection

  • GDP is a set of guidelines for ensuring the quality and safety of pharmaceutical products during distribution

  • It includes require...read more

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2d ago

Q. What types of chemicals are used in standardized tests?

Ans.

The type of chemical used in standardized test depends on the test being conducted.

  • Different tests require different chemicals for accuracy and reliability.

  • Chemicals used in standardized tests are often highly purified and standardized themselves.

  • Examples of chemicals used in standardized tests include reagents like Benedict's solution and litmus paper.

  • Other chemicals used in standardized tests include acids, bases, and indicators.

  • The choice of chemical depends on the nature ...read more

4d ago

Q. What is assay? Why we do assay in pharmaceutical industry?

Ans.

Assay is a test to determine the potency or purity of a drug or substance.

  • Assay is done to ensure that the drug or substance meets the required standards.

  • It helps in determining the concentration of the active ingredient in a drug.

  • Assay can also be used to detect impurities or contaminants in a drug.

  • It is an important part of quality control in the pharmaceutical industry.

  • Examples of assays include HPLC, GC, and spectrophotometry.

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5d ago

Q. What is semipermeable membrane? And which type of parts we can see in this ?

Ans.

Semipermeable membrane is a type of membrane that allows certain molecules to pass through while blocking others.

  • It is a thin layer of material that selectively allows certain molecules to pass through

  • Examples include cell membranes and dialysis tubing

  • The membrane is made up of tiny pores or channels that allow small molecules to pass through

  • It is used in various applications such as water filtration and drug delivery systems

Asked in Britannia

5d ago

Q. Which is the problem observed during manufacturing of baking goods and What is the solution on this problems?

Ans.

One common problem observed during manufacturing of baking goods is inconsistent product quality.

  • Inconsistent product quality can occur due to variations in ingredient measurements, mixing techniques, or oven temperatures.

  • For example, if the amount of baking powder used in a recipe is not accurately measured, it can result in uneven rising of the baked goods.

  • Similarly, if the mixing technique is not uniform, some portions of the product may be under-mixed or over-mixed, leadi...read more

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Asked in Lupin

4d ago

Q. Which instruments have you handled?

Ans.

I have handled various instruments including calipers, micrometers, gauges, and spectrophotometers.

  • Calipers for measuring distance between two opposite sides of an object

  • Micrometers for measuring small distances with high precision

  • Gauges for measuring various parameters such as pressure, temperature, and humidity

  • Spectrophotometers for measuring the intensity of light in a spectrum

  • Also familiar with pH meters, balances, and pipettes

  • Regularly trained on new instruments and thei...read more

4d ago

Q. What are high permeability and low permeability membranes?

Ans.

High and low permeability membranes are used in filtration processes to control the flow of substances.

  • High permeability membranes allow for a greater flow of substances through the membrane.

  • Low permeability membranes restrict the flow of substances through the membrane.

  • Permeability is determined by the size of the pores in the membrane.

  • Examples of high permeability membranes include ultrafiltration membranes used in water treatment.

  • Examples of low permeability membranes incl...read more

Asked in Lupin

3d ago

Q. What is the difference between a swab sample and a rinse sample?

Ans.

A swab sample involves using a swab to collect a sample from a specific area, while a rinse sample involves rinsing a larger area to collect a sample.

  • Swab sample: Collects a sample from a specific area using a swab.

  • Rinse sample: Involves rinsing a larger area to collect a sample.

  • Swab samples are commonly used for surface testing, such as swabbing a countertop or equipment.

  • Rinse samples are often used for environmental testing, such as rinsing a large area of a production floo...read more

3d ago

Q. If one tablet of paracetamol 500 mg API is needed, how many grams or kilograms of API are needed to manufacture 1 million tablets?

Ans.

To manufacture 10 lakh tablets of paracetamol 500 mg API, you would need a certain amount of grams or kilograms of API.

  • To find the amount of API needed, we need to calculate the total quantity required for 10 lakh tablets.

  • First, convert 10 lakh tablets to the number of milligrams (mg) by multiplying by 500 mg (the dosage of each tablet).

  • Then, convert the total milligrams to grams or kilograms by dividing by 1000.

  • The resulting value will be the amount of API needed to manufact...read more

6d ago

Q. What is tablet? How many dosage forms are there ?

Ans.

Tablet is a solid dosage form of medication. There are several types of dosage forms available.

  • Tablet is a compressed solid form of medication.

  • It is one of the most commonly used dosage forms.

  • Other dosage forms include capsules, injections, syrups, etc.

  • Tablets can be coated or uncoated, immediate or extended release.

  • Examples of tablets include aspirin, paracetamol, and ibuprofen.

Q. What are acids and bases?

Ans.

Acidic substances have a pH less than 7, while basic substances have a pH greater than 7.

  • Acids release hydrogen ions (H+) when dissolved in water.

  • Bases release hydroxide ions (OH-) when dissolved in water.

  • Examples of acids include vinegar, lemon juice, and battery acid.

  • Examples of bases include baking soda, bleach, and ammonia.

Asked in Tata Steel

4d ago

Q. What is the chemical composition of iron ore?

Ans.

The chemical composition of iron ore varies depending on the type of ore and its source.

  • Iron ore is primarily composed of iron oxides, such as hematite and magnetite.

  • Other elements present in iron ore include silica, alumina, phosphorus, sulfur, and trace amounts of various metals.

  • The specific chemical composition of iron ore can vary widely, even within the same deposit or mine.

  • For example, a typical chemical composition of iron ore may include around 60-70% iron, 2-6% silic...read more

3d ago

Q. What color are we seeing in the test solution?

Ans.

The color seen in the test solution depends on the type of test being conducted.

  • The color change indicates the presence or absence of a particular substance in the solution.

  • Different tests use different indicators to produce a color change.

  • For example, a pH test may use litmus paper to indicate acidity or alkalinity.

  • A glucose test may use a reagent that changes color in the presence of glucose.

  • The color seen in the test solution can be compared to a color chart to determine t...read more

3d ago

Q. What is physical compatability and what is chemical compatability?

Ans.

Physical compatibility refers to the ability of two substances to be mixed or combined without any physical changes. Chemical compatibility refers to the ability of two substances to be mixed or combined without any chemical reactions.

  • Physical compatibility is about the physical properties of substances, such as solubility, viscosity, and stability.

  • Chemical compatibility is about the chemical properties of substances, such as reactivity, acidity, and compatibility with other ...read more

3d ago

Q. What is osmosis and what is osmotic pressure?

Ans.

Osmosis is the movement of solvent molecules from a region of low solute concentration to a region of high solute concentration through a semi-permeable membrane. Osmotic pressure is the pressure required to prevent the movement of solvent molecules through the membrane.

  • Osmosis is a type of passive transport.

  • It occurs in living cells and is important for maintaining cell shape and function.

  • Osmotic pressure is influenced by the concentration of solutes on either side of the me...read more

5d ago

Q. What is distillation? And what is dilution?

Ans.

Distillation is a process of separating components of a mixture based on their boiling points. Dilution is the process of reducing the concentration of a solution by adding more solvent.

  • Distillation involves heating a mixture to vaporize the component with the lowest boiling point, then condensing the vapor to collect the purified component.

  • Dilution is commonly used in chemistry to prepare solutions of a desired concentration.

  • Distillation and dilution are both important techn...read more

5d ago

Q. What is the difference between qualitative and quantitative analysis?

Ans.

Qualitative analysis is subjective and deals with non-numerical data while quantitative analysis is objective and deals with numerical data.

  • Qualitative analysis deals with non-numerical data while quantitative analysis deals with numerical data.

  • Qualitative analysis is subjective while quantitative analysis is objective.

  • Qualitative analysis is used to gain insights and understanding while quantitative analysis is used to measure and quantify.

  • Examples of qualitative analysis in...read more

Asked in Lupin

3d ago

Q. What is the principle of HPLC?

Ans.

HPLC stands for High Performance Liquid Chromatography. It is a technique used to separate, identify, and quantify components in a mixture.

  • HPLC works on the principle of separation of components based on their interaction with the stationary phase and mobile phase.

  • The stationary phase is a solid or liquid material that is packed into a column, while the mobile phase is a liquid that flows through the column.

  • The sample is injected into the mobile phase and as it flows through ...read more

6d ago

Q. How many compatibilities are there in the pharmaceutical industry?

Ans.

There are numerous compatibilities in pharmaceutical industry depending on the type of drug, dosage form, and excipients used.

  • Drug-excipient compatibility

  • Drug-dosage form compatibility

  • Excipient-excipient compatibility

  • Container-drug compatibility

  • Drug-stability compatibility

Asked in Lupin

3d ago

Q. What are the criteria for Uniformity of Dosage Unit?

Ans.

Criteria for Uniformity of Dosage Unit

  • Uniformity of weight and drug content in each dosage unit

  • Acceptable range of variation in weight and drug content

  • Ensuring consistent potency and efficacy of the drug

  • Testing methods include weight variation test and content uniformity test

  • Criteria varies depending on the type of drug and dosage form

3d ago

Q. What is the role of the quality control department in the pharmaceutical industry?

Ans.

The quality control department ensures that pharmaceutical products meet the required standards and regulations.

  • Ensuring compliance with regulatory requirements

  • Testing and analyzing raw materials, in-process samples, and finished products

  • Identifying and resolving quality issues

  • Maintaining documentation and records

  • Conducting audits and inspections

  • Collaborating with other departments to improve quality and efficiency

Asked in Veko Care

4d ago

Q. What is pH? What is environmental monitoring in microbiology

Ans.

pH is a measure of acidity or alkalinity of a solution. Environmental monitoring in microbiology is the process of monitoring the microbial contamination in the environment.

  • pH is measured on a scale of 0-14, with 7 being neutral, below 7 acidic and above 7 alkaline

  • Environmental monitoring in microbiology involves sampling and testing of air, water, surfaces, and personnel for microbial contamination

  • The purpose of environmental monitoring is to identify potential sources of co...read more

Asked in Tata Steel

5d ago

Q. What are the material safety protocols in your working area?

Ans.

The material safety in my working area is ensured through strict adherence to safety protocols and regular inspections.

  • Strict adherence to safety protocols

  • Regular inspections to identify and address any potential hazards

  • Proper storage and handling of materials

  • Use of personal protective equipment (PPE)

  • Training and awareness programs for employees

Asked in Foxit

1d ago

Q. What is the difference between QA and QC?

Ans.

QA (Quality Assurance) focuses on preventing defects, while QC (Quality Control) focuses on identifying and fixing defects.

  • QA is a proactive process that ensures quality standards are met throughout the entire development process.

  • QC is a reactive process that involves inspecting and testing the final product to identify defects.

  • QA involves activities like creating test plans, conducting reviews, and implementing quality standards.

  • QC involves activities like conducting inspect...read more

Asked in Lupin

6d ago

Q. Tell me about Dissolution Criteria.

Ans.

Dissolution criteria refers to the amount of drug substance that should dissolve in a specified time period.

  • It is a measure of drug release from a dosage form.

  • It is important for ensuring the drug is being absorbed properly.

  • The criteria varies depending on the type of drug and dosage form.

  • For example, immediate-release tablets should dissolve at least 80% in 30 minutes.

  • Slow-release tablets may have a longer dissolution time.

6d ago

Q. saliva pH range ? And also water pH range?

Ans.

Saliva pH range is typically between 6.2 and 7.6, while water pH range is generally between 6.5 and 8.5.

  • Saliva pH range: 6.2 - 7.6

  • Water pH range: 6.5 - 8.5

Asked in Lupin

1d ago

Q. Which test have you performed most frequently?

Ans.

I have performed the microbiological test the most.

  • Microbiological test is crucial in ensuring the safety and quality of products.

  • Examples include testing for microbial contamination in food and pharmaceutical products.

  • I have performed this test numerous times in my previous roles as a Quality Control Officer.

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