Prayagh Nutri Products Quality Control Chemist Trainee Interview Questions and Answers

Electrovalency is the measure of the combining capacity of an atom in terms of the number of electrons it can gain, lose, or share.

• Electrovalency is a concept in chemistry that relates to the ability of an atom to gain, lose, or share electrons.

• It is a measure of the combining capacity of an atom.

• Electrovalency is determined by the number of valence electrons an atom has.

• Atoms with a higher electrovalency can form stro...read more

Moisture refers to the presence of water in a substance, while humidity is the amount of water vapor in the air.

• Moisture is the actual water content in a substance, while humidity is the measure of water vapor in the air.

• Moisture can be measured by drying a substance and calculating the weight loss, while humidity is measured using a hygrometer.

• Moisture is important in determining the quality and stability of materials...read more

The density of H2SO4 and HNO3 varies depending on the concentration.

• The density of H2SO4 and HNO3 can be calculated using the formula: density = mass/volume.

• The density of H2SO4 and HNO3 increases with increasing concentration.

• The density of H2SO4 and HNO3 at standard conditions (concentration of 1 M) is approximately 1.84 g/mL and 1.41 g/mL, respectively.

pH is a measure of the acidity or alkalinity of a solution. It indicates the concentration of hydrogen ions in the solution.

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

• A pH value below 7 indicates acidity, with lower values being more acidic.

• A pH value above 7 indicates alkalinity, with higher values being more alkaline.

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

• Examples: Lemon j...read more

The molecular weight of H2SO4 is 98.09 g/mol.

• The molecular weight of H2SO4 can be calculated by adding up the atomic weights of its constituent elements.

• H2SO4 consists of 2 hydrogen atoms, 1 sulfur atom, and 4 oxygen atoms.

• The atomic weights of hydrogen, sulfur, and oxygen are 1.008 g/mol, 32.06 g/mol, and 16.00 g/mol respectively.

• Multiplying the atomic weights by the number of atoms and summing them gives the molecula

Ethanol and methanol are two common types of alcohol. Ethanol has the formula C2H5OH, while methanol has the formula CH3OH.

• Ethanol formula: C2H5OH

• Methanol formula: CH3OH

Various lab instruments are used in chemistry experiments and analysis.

• Spectrophotometer: measures the intensity of light absorbed or emitted by a sample

• Centrifuge: separates substances of different densities using centrifugal force

• pH meter: measures the acidity or alkalinity of a solution

• Bunsen burner: provides a controlled flame for heating substances

• Microscope: magnifies and visualizes small samples

• Gas chromatograph...read more

Normality, molality, and molarity are different ways to express the concentration of a solution.

• Normality is the concentration of a solution expressed in equivalents per liter.

• Molality is the concentration of a solution expressed in moles of solute per kilogram of solvent.

• Molarity is the concentration of a solution expressed in moles of solute per liter of solution.

• Normality is used in acid-base reactions, while molali...read more

Seeking new challenges and growth opportunities in a different work environment.

• Looking for a more challenging role that allows me to utilize my skills and knowledge to the fullest

• Seeking a change in work environment to gain new experiences and perspectives

• Interested in exploring different industries and their applications of chemistry

• Desire for professional growth and advancement in my career

• Want to work with a team t