Chemist Quality Control Interview Questions and Answers for Freshers

The package for annum refers to the unit of time equal to one year.

• Annum is a Latin term meaning 'year'.

• In the context of chemistry, the package for annum is used to express rates or frequencies over a period of one year.

• For example, the decay rate of a radioactive substance may be measured in disintegrations per annum.

ICP-OES is a technique used to determine the elemental composition of a sample by measuring the intensity of light emitted by the sample.

• ICP-OES stands for Inductively Coupled Plasma Optical Emission Spectroscopy

• It works by ionizing the sample with plasma and then measuring the light emitted by the excited ions

• The intensity of the light is proportional to the concentration of the element in the sample

• ICP-OES is commonly used in environmental analysis, pharmaceuticals, and met...read more

A buffer solution is a solution that resists changes in pH when small amounts of acid or base are added.

• Buffer solutions are made up of a weak acid and its conjugate base or a weak base and its conjugate acid.

• They are commonly used in chemical and biological experiments to maintain a stable pH.

• Examples of buffer solutions include acetic acid/sodium acetate buffer and phosphate buffer.

• Buffer capacity is the amount of acid or base that can be added to a buffer solution without ...read more

EDXRF stands for Energy Dispersive X-ray Fluorescence. It is a non-destructive analytical technique used for elemental analysis.

• EDXRF measures the characteristic X-rays emitted by a sample when it is bombarded with high-energy X-rays.

• The energy of the emitted X-rays is characteristic of the elements present in the sample.

• EDXRF can be used for qualitative and quantitative analysis of a wide range of elements.

• It is commonly used in materials science, environmental analysis, and...read more

Quality person selection involves a thorough screening process to identify the most suitable candidate for the job.

• Define the job requirements and qualifications

• Create a job description and post it on relevant job boards

• Review resumes and cover letters to identify potential candidates

• Conduct phone and in-person interviews to assess skills and personality

• Check references and conduct background checks

• Make an offer to the most qualified candidate

GC principal refers to the principle of gas chromatography, which involves separating and analyzing components of a mixture based on their affinity for a stationary phase and a mobile phase.

• Gas chromatography (GC) is a technique used to separate and analyze volatile compounds in a mixture.

• The principle of GC involves the use of a stationary phase (typically a solid or liquid) and a mobile phase (usually a gas) to separate the components of the mixture.

• The components of the mi...read more