Indian Pharma Company
10+ Amazon Interview Questions and Answers
Q1. What is solution, solvent,solute
Solution, solvent, and solute are terms used in chemistry to describe the components of a homogeneous mixture.
A solution is a homogeneous mixture composed of a solvent and one or more solutes.
The solvent is the substance that dissolves the solute(s) to form the solution.
The solute is the substance that is dissolved in the solvent to form the solution.
For example, in a saltwater solution, water is the solvent and salt is the solute.
Q2. What is pH and it's range
pH is a measure of acidity or alkalinity of a solution on a scale of 0-14.
pH stands for 'potential of hydrogen'
A pH of 7 is neutral, below 7 is acidic, and above 7 is alkaline
The pH scale is logarithmic, meaning each whole number change represents a tenfold change in acidity or alkalinity
Examples of pH values: lemon juice (2.0), vinegar (2.5), water (7.0), baking soda (8.5), ammonia (11.5)
Q3. Which of strong/week acid base
Strong acids and bases dissociate completely in water, while weak acids and bases only partially dissociate.
Strong acids: HCl, HNO3, H2SO4
Strong bases: NaOH, KOH, Ca(OH)2
Weak acids: acetic acid, carbonic acid
Weak bases: ammonia, pyridine
Q4. Principle of Raman spectroscopy
Raman spectroscopy is a technique used to study vibrational, rotational, and other low-frequency modes in a system.
It involves the use of a laser to excite the molecules in a sample, causing them to vibrate and emit light at different wavelengths.
The resulting spectrum can be used to identify the chemical composition of the sample and study its molecular structure.
Raman spectroscopy is commonly used in materials science, chemistry, and biology.
It can be used to analyze the co...read more
Q5. What is acid and base
Acid and base are two types of chemical substances with opposite properties.
Acids are substances that donate hydrogen ions (H+) in a solution.
Bases are substances that accept hydrogen ions (H+) in a solution.
Acids have a pH value less than 7, while bases have a pH value greater than 7.
The reaction between an acid and a base is called neutralization, which results in the formation of salt and water.
Examples of acids include hydrochloric acid, sulfuric acid, and citric acid, wh...read more
Q6. What is end point
End point refers to the point at which a process or reaction is considered complete.
It is the final stage of a process or reaction
It is the point at which a desired outcome is achieved
In quality control, it is the point at which a product meets the required specifications
Examples include the endpoint of a titration, the endpoint of a chemical reaction, and the endpoint of a manufacturing process
Q7. What is spectroscopy
Spectroscopy is the study of the interaction between matter and electromagnetic radiation.
It involves the measurement of the absorption, emission, or scattering of electromagnetic radiation by a sample.
It is used in various fields such as chemistry, physics, astronomy, and biology.
Examples include UV-Vis spectroscopy, infrared spectroscopy, and nuclear magnetic resonance spectroscopy.
It can be used for qualitative and quantitative analysis of samples.
It can provide informatio...read more
Q8. What is normality
Normality refers to the concentration of a solution in terms of the number of equivalents of solute per liter of solution.
Normality is a measure of concentration used in chemistry.
It is defined as the number of equivalents of solute per liter of solution.
It is different from molarity, which is the number of moles of solute per liter of solution.
For example, a 1N solution of hydrochloric acid contains 1 equivalent of HCl per liter of solution.
Normality is often used in acid-ba...read more
Q9. What is molarity
Molarity is a measure of the concentration of a solution expressed as the number of moles of solute per liter of solution.
Molarity is calculated by dividing the number of moles of solute by the volume of the solution in liters.
It is denoted by the symbol 'M'.
Molarity is commonly used in chemistry to express the concentration of a solution.
For example, a 1 M solution of sodium chloride contains 1 mole of sodium chloride per liter of solution.
Q10. principle of HPLC
HPLC is a technique used in quality control to separate, identify, and quantify components in a mixture.
HPLC stands for High-Performance Liquid Chromatography.
It is based on the principle of separating components of a mixture using a liquid mobile phase and a solid stationary phase.
The separation is achieved by the differential interaction of the components with the stationary phase.
The components are detected and quantified using a detector, such as UV-Vis spectroscopy or ma...read more
Q11. Principle of UV
UV principle is based on the absorption of light by molecules and atoms, leading to electronic transitions.
UV radiation causes electronic transitions in molecules and atoms
The energy absorbed by the molecule or atom is proportional to the wavelength of the UV radiation
UV spectroscopy is used to identify functional groups in organic molecules
UV radiation is also used for sterilization and disinfection purposes
Q12. Update the new rules in the organization.
New rules have been implemented in the organization.
The new rules focus on improving workplace safety.
Employees are required to attend mandatory safety training sessions.
There are stricter guidelines for handling hazardous materials.
The dress code policy has been updated to reflect a more professional image.
All employees must sign a document acknowledging they have read and understand the new rules.
Top Interview Questions from Similar Companies
Reviews
Interviews
Salaries
Users/Month