Quality Council of India Assessor Interview Questions and Answers

Titration is a laboratory technique used to determine the concentration of a substance in a solution.

• Titration involves adding a solution of known concentration to a solution of unknown concentration until a reaction is complete.

• Types of titration include acid-base titration, redox titration, and complexometric titration.

• In acid-base titration, an acid or base is titrated with a solution of the opposite type to determi...read more

A pH meter is a scientific instrument used to measure the acidity or alkalinity of a solution.

• It measures the concentration of hydrogen ions in a solution.

• The pH meter consists of a pH probe and a meter that displays the pH value.

• The probe is inserted into the solution and measures the voltage difference between the solution and a reference electrode.

• The pH value is calculated based on the voltage difference.

• Examples o...read more

Concentration conversions refer to the process of converting between different units of concentration, such as molarity, molality, and percent composition.

• Converting between molarity and molality involves taking into account the density of the solution.

• To convert from molarity to percent composition, you need to consider the molar mass of the solute.

• Concentration conversions are important in chemistry for accurately me

Testing is a process of evaluating the performance or characteristics of a substance or system.

• Testing involves conducting experiments or analyses to gather data and draw conclusions.

• It is used to ensure the quality, safety, and effectiveness of products or processes.

• Chemical testing may involve analyzing the composition, purity, or properties of substances.

• Testing methods can include physical, chemical, or biological ...read more

Environmental testing is crucial for ensuring the safety of our surroundings and preventing harm to human health.

• Identifies potential hazards and risks to human health and the environment

• Helps in developing and implementing effective pollution control measures

• Ensures compliance with environmental regulations and standards

• Examples include testing for air and water quality, soil contamination, and hazardous waste disposa...read more

AFR stands for Air Fuel Ratio, a critical parameter in combustion processes.

• AFR is the ratio of air to fuel in an internal combustion engine.

• It is measured using a device called an oxygen sensor.

• The ideal AFR varies depending on the type of fuel and engine.

• A lean AFR (more air, less fuel) can improve fuel efficiency but may cause engine damage.

• A rich AFR (more fuel, less air) can improve performance but may increase em...read more

AFR testing is a process of measuring the air-to-fuel ratio in an engine to optimize its performance and reduce emissions.

• AFR stands for Air-Fuel Ratio

• It is commonly used in automotive and aviation industries

• The ideal AFR varies depending on the type of fuel and engine

• AFR testing can be done using a wideband oxygen sensor or a gas analyzer

I know various parameters related to chemistry such as temperature, pressure, concentration, pH, etc.

• Temperature

• Pressure

• Concentration

• pH

• Molarity

• Molality

• Density

• Viscosity

• Refractive index