Y-Axis Overseas Careers Interview Questions and Answers

S1, S2, and S3 in dissolution refer to the stages of dissolution testing in pharmaceutical analysis.

• S1 is the stage where the tablet starts to disintegrate into smaller particles.

• S2 is the stage where the drug starts to dissolve into the surrounding medium.

• S3 is the stage where the drug is completely dissolved and available for absorption.

• These stages are important in determining the release rate of the drug from the dosage form.

Q stands for Quantity in Dissolution.

• Q stands for Quantity in Dissolution testing.

• It refers to the amount of drug substance that is dissolved in a specified time period.

• It is an important parameter in assessing the quality and performance of a drug product.

• Q can also stand for Quality in some contexts, but in Dissolution it specifically refers to Quantity.

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.

• Example: A 1M solution of NaCl has 1 mole of NaCl dissolved ...read more

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 colors from violet to red.

• UV and visible range are common...read more

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 measures the amount of each component as it elutes from the colu...read more

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

ALCOA+++ is a set of principles for data integrity in the pharmaceutical industry.

• Attributable

• Legible

• Contemporaneous

• Original

• Accurate

• Complete

• Consistent

• Enduring

• Available

• Traceable