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I applied via Campus Placement and was interviewed in Dec 2020. There were 3 interview rounds.
posted on 24 Oct 2024
I applied via Naukri.com and was interviewed before Aug 2023. There was 1 interview round.
posted on 21 Sep 2022
I applied via Company Website and was interviewed in Aug 2022. There were 2 interview rounds.
HPLc,GC, IR,UV,And basic chemistry related questions
I applied via Walk-in and was interviewed in Jan 2022. There were 3 interview rounds.
Total 30 Questions (15 Aptitude and 15 Technical Questions)
The Grignard reaction involves the addition of an organomagnesium halide to a carbonyl group.
The reaction is named after French chemist Victor Grignard.
It is used to form carbon-carbon bonds and is a key reaction in organic synthesis.
An example is the synthesis of triphenylmethanol from benzophenone and phenylmagnesium bromide.
The reaction proceeds through the formation of a Grignard reagent, which then attacks the car...
Titration is a technique to determine the concentration of a substance in a solution. pH is a measure of acidity or basicity of a solution.
Titration involves adding a solution of known concentration to a solution of unknown concentration until the reaction is complete.
pH is measured on a scale of 0-14, with 7 being neutral, below 7 acidic, and above 7 basic.
Titration can be used to determine the concentration of acids,...
I applied via Campus Placement and was interviewed in Jul 2021. There were 4 interview rounds.
posted on 23 Nov 2021
Types of reaction
Chemical reactions can be classified into several types based on the nature of reactants and products
Some common types of reactions include synthesis, decomposition, combustion, displacement, and redox reactions
Synthesis reactions combine two or more substances to form a new compound, e.g., A + B → AB
Decomposition reactions break down a compound into its constituent elements or simpler compounds, e.g.,...
posted on 6 Sep 2021
I applied via Referral and was interviewed before Sep 2020. There was 1 interview round.
The interview question covers topics such as Lewis acid, pH, acid and base, organic chemistry, periodic table, chemical formulas, and pH measurement without a pH meter.
Lewis acid is an electron acceptor, examples include AlCl3 and FeCl3
pH is a measure of acidity or basicity, with a range of 0-14
Acids donate H+ ions, bases accept H+ ions
Organic chemistry deals with carbon-based compounds, examples include ethanol and gl...
Benzene is a colorless, highly flammable liquid with a sweet odor. It is a basic building block of many chemicals.
Benzene is a hydrocarbon with the chemical formula C6H6.
It is a natural constituent of crude oil and gasoline.
Benzene is used in the production of plastics, synthetic fibers, rubber, dyes, detergents, and pharmaceuticals.
Exposure to benzene can cause cancer and other health problems.
Benzene is also a major ...
Water has a boiling point of 100°C and a melting point of 0°C. Other solvents have varying boiling and melting points.
Water has a high boiling point due to its strong hydrogen bonding
Solvents like ethanol have lower boiling points than water
Melting points of solvents depend on their molecular structure
Some solvents like mercury are liquid at room temperature
Boiling and melting points are important in chemical reactions
Writen test contected
I applied via Referral and was interviewed in Dec 2020. There was 1 interview round.
pH is a measure of the acidity or alkalinity of a solution.
pH stands for 'potential of hydrogen'.
It is a logarithmic scale ranging from 0 to 14.
A pH of 7 is considered neutral, below 7 is acidic, and above 7 is alkaline.
pH is determined by the concentration of hydrogen ions in a solution.
Examples: Lemon juice has a pH of around 2, while baking soda has a pH of around 9.
PH represents the concentration of hydrogen ions in a sample.
PH is measured on a scale of 0-14, with 7 being neutral.
A lower PH indicates higher acidity, while a higher PH indicates higher alkalinity.
PH can be measured using a PH meter or through chemical indicators.
The PH of a sample can affect its chemical properties and reactions.
LOD stands for Limit of Detection. It is the lowest concentration of a substance that can be reliably detected.
LOD is used to determine the sensitivity of an analytical method.
It is usually expressed as a concentration or mass.
Water is a chemical compound composed of hydrogen and oxygen, while LOD is a term used in analytical chemistry.
LOD is important in environmental testing to determine the presence of contaminants ...
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