Deccan Fine Chemicals QA QC Engineer Interview Questions and Answers

Normality refers to the state of being normal or conforming to a standard or norm.

• Normality is a concept used in various fields, including statistics, psychology, and engineering.

• In statistics, normality refers to the distribution of data being symmetrical and bell-shaped.

• In psychology, normality refers to behavior that is considered typical or within the range of what is expected.

• In engineering, normality can refer to...read more

pH value is a measure of the acidity or alkalinity of a solution.

• pH value ranges from 0 to 14, with 7 being neutral.

• Values below 7 indicate acidity, while values above 7 indicate alkalinity.

• Each unit change in pH represents a tenfold change in acidity or alkalinity.

• pH is measured using a pH meter or pH paper.

• For example, lemon juice has a pH of around 2, making it highly acidic.

• On the other hand, baking soda has a pH o

Euler's equation is a mathematical formula that relates the values of trigonometric functions to complex exponential functions.

• Euler's equation is e^(ix) = cos(x) + i*sin(x)

• It is used in various fields including physics, engineering, and signal processing

• It is named after the Swiss mathematician Leonhard Euler

Law of motion is a fundamental concept in physics that describes the behavior of objects in motion.

• There are three laws of motion formulated by Sir Isaac Newton.

• The first law states that an object at rest will remain at rest, and an object in motion will remain in motion with a constant velocity, unless acted upon by a net external force.

• The second law states that the acceleration of an object is directly proportional ...read more

Transformers work on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.

• Transformers have two coils of wire, known as primary and secondary coils, which are wound around a core made of ferromagnetic material.

• When an alternating current flows through the primary coil, it creates a changing magnetic field around the coil.

• This changing magnetic field induces a voltage in ...read more

Transformers are cooled using methods such as oil cooling, air cooling, and water cooling.

• Oil cooling: Transformers are immersed in oil to dissipate heat generated during operation.

• Air cooling: Fans are used to circulate air around the transformer to cool it down.

• Water cooling: Water is circulated around the transformer to absorb heat and cool it.

• Forced oil cooling: Oil is circulated through a heat exchanger to remove

Heat transfer is the movement of heat from one object to another due to a temperature difference, while mass transfer is the movement of mass from one location to another.

• Heat transfer can occur through conduction, convection, or radiation.

• Examples of heat transfer include a hot cup of coffee cooling down in a room, or a stove heating up a pot of water.

• Mass transfer involves the movement of molecules or particles from ...read more

Distillation is a process of separating components of a liquid mixture based on differences in boiling points. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

• Distillation involves heating a liquid mixture to create vapor, then cooling the vapor to condense it back into liquid form, separating the components based on their boiling points.

• Diffusion is the passive...read more

Normality refers to the state of being normal or conforming to a standard or norm.

• Normality is a concept used in various fields, including statistics, psychology, and engineering.

• In statistics, normality refers to the distribution of data being symmetrical and bell-shaped.

• In psychology, normality refers to behavior that is considered typical or within the range of what is expected.

• In engineering, normality can refer to...read more

pH value is a measure of the acidity or alkalinity of a solution.

• pH value ranges from 0 to 14, with 7 being neutral.

• Values below 7 indicate acidity, while values above 7 indicate alkalinity.

• Each unit change in pH represents a tenfold change in acidity or alkalinity.

• pH is measured using a pH meter or pH paper.

• For example, lemon juice has a pH of around 2, making it highly acidic.

• On the other hand, baking soda has a pH o