IVM Pharmacia Interview Questions and Answers

UV spectrophotometer measures the absorption of light by a sample, while HPLC separates and analyzes components in a mixture.

• UV spectrophotometer uses UV light to measure the absorbance of a sample at a specific wavelength.

• HPLC separates and analyzes components in a mixture by passing it through a column filled with a stationary phase.

• Both techniques are commonly used in analytical chemistry for quantitative and qualit...read more

Natural indicators are substances that change color in response to changes in pH levels.

• They are derived from natural sources such as plants, fruits, and vegetables.

• Examples include red cabbage, turmeric, and beetroot.

• They are used in various applications such as in food, cosmetics, and medicine.

• They are eco-friendly and non-toxic compared to synthetic indicators.

Lambert's law and Beer's law are both related to the absorption of light by a substance.

• Lambert's law states that the amount of light absorbed by a substance is directly proportional to its thickness and concentration.

• Beer's law states that the amount of light absorbed by a substance is directly proportional to its concentration and the path length of the light through the substance.

• Both laws are used in spectroscopy t...read more

A UV spectrophotometer measures the absorption of ultraviolet (UV) light by a sample to determine its concentration or purity.

• UV spectrophotometers use a UV light source to emit a specific wavelength of light.

• The light passes through a sample, and the amount of light absorbed is measured by a detector.

• The absorption data is then used to calculate the concentration or purity of the sample.

• UV spectrophotometers are commo...read more

Titration is a technique used to determine the concentration of a substance in a solution by reacting it with a known solution.

• Titration involves the gradual addition of a solution of known concentration (titrant) to a solution of unknown concentration (analyte) until the reaction between the two is complete.

• The endpoint of a titration is determined by using an indicator or by monitoring a physical change in the soluti...read more

Titrant is a solution of known concentration used in titration. Titrend is the solution being analyzed.

• Titrant is added to the titrend until the reaction is complete.

• The concentration of the titrant is used to determine the concentration of the titrend.

• Titrant and titrend are used in titration to determine the unknown concentration of a solution.

• Examples of titrants include sodium hydroxide, hydrochloric acid, and pota...read more