Healthcare and pharma
Unichem Laboratories Formulation Scientist Interview: Rounds, Questions and Preparation
For Formulation Scientist roles at companies like Unichem Laboratories
What the job involves
A Formulation Scientist in a pharma company develops and optimises drug formulations, from pre-formulation studies to pilot-scale batches, ensuring stability, bioavailability, and manufacturability. Day to day, they design experiments, analyse data, prepare batch records and reports, and collaborate with analytical, regulatory, and production teams. At smaller or fast-growing employers like Unichem Laboratories, freshers often get hands-on exposure to solid oral dosage forms and technology transfer.
Role and Technical Knowledge
- 1
What are the key steps in pre-formulation for a new chemical entity?
Mention physicochemical characterisation: solubility, pKa, logP, polymorphism, particle size, and compatibility with excipients. Link each to formulation decisions.
- 2
Explain the difference between immediate-release and modified-release tablets.
Immediate-release disintegrates and dissolves rapidly; modified-release controls rate, time, or site of release. Give examples like sustained-release or enteric-coated.
- 3
What factors affect dissolution of a tablet, and how would you improve a slow-dissolving batch?
Cover API particle size, polymorphism, excipient choice, compression force, and disintegrant level. Suggest milling, solid dispersion, or superdisintegrant addition.
- 4
How do you design a stability study for a new formulation as per ICH?
Mention long-term, intermediate, and accelerated conditions, testing intervals, and parameters like assay, dissolution, and impurities. Reference ICH Q1A(R2).
Practical Scenarios and Problem Solving
- 5
During scale-up, tablets show capping. What could be the reasons and how would you troubleshoot?
Consider compression force, air entrapment, granule moisture, and tooling. Suggest pre-compression, adjusting speed, or modifying binder level.
- 6
A batch fails dissolution specification at 30 minutes. How do you investigate?
Check API properties, blend uniformity, hardness, disintegrant, and coating. Propose design of experiments to isolate the cause and rework or reformulate.
- 7
You need to develop a generic version of a marketed tablet. What information do you gather first?
Mention innovator's qualitative and quantitative composition, dissolution profile, and patents. Discuss reverse engineering and bioequivalence requirements.
- 8
How would you handle a deviation during a pilot batch manufacturing?
Follow SOP: document, report, assess impact, and initiate CAPA. Emphasise GMP compliance and not hiding the deviation.
Behavioural and Teamwork
- 9
Tell me about a time you worked in a team to complete a project under deadline.
Use STAR format. Highlight your specific contribution, coordination, and how you handled pressure without compromising quality.
- 10
Describe a situation where an experiment failed. What did you learn?
Show ownership, analytical thinking, and learning. Mention how you documented findings and adjusted your approach.
- 11
How do you prioritise multiple tasks when your manager is unavailable?
Explain assessing urgency and impact, using checklists, and communicating proactively. Give an example from academics or internship.
- 12
Give an example of how you ensured accuracy in your lab work.
Discuss calibration, duplicate testing, documentation, and peer review. Show attention to detail and GMP mindset.
HR and Career Fit
- 13
Why do you want to work as a Formulation Scientist in a fast-growing pharma company?
Connect your interest in product development, hands-on work, and impact on patient health. Mention willingness to learn and adapt.
- 14
Where do you see yourself in three years?
Show realistic growth: deeper technical expertise, independent project handling, and contributing to scale-up or regulatory submissions.
- 15
Are you comfortable working in a lab environment with strict safety and documentation norms?
Affirm yes and give examples of following safety protocols and maintaining records during college projects or internships.
- 16
What are your salary expectations?
Research industry standards for freshers in pharma. Give a reasonable range and express flexibility based on role and learning opportunities.
Ready to try it for real?
Take a timed test or talk through a mock interview for this role, then see your scores.
This is practice material for Formulation Scientist roles, written with AI. It is not a list of questions Unichem Laboratories or any other company has asked.