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EDTA can be standardized by titration with a known concentration of a metal ion.
Prepare a solution of EDTA and a metal ion of known concentration.
Add an indicator to the solution to detect the endpoint of the titration.
Slowly add the metal ion solution to the EDTA solution until the indicator changes color.
Record the volume of the metal ion solution added.
Repeat the titration multiple times to ensure accuracy.
Calculate...
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I was interviewed in Jun 2023.
Analytical skills and reasoning
Polymer chain breakdown occurs through processes like thermal degradation, photo-oxidation, and mechanical degradation.
Thermal degradation: Polymer chains break down due to exposure to high temperatures, leading to chain scission and formation of smaller molecules.
Photo-oxidation: Polymer chains degrade when exposed to light and oxygen, causing chain scission and formation of carbonyl groups.
Mechanical degradation: Pol...
Polymer preparation involves polymerization of monomers to form long chains of repeating units.
Polymerization is the process of combining monomers to form polymers
Monomers can be combined through addition, condensation, or ring-opening polymerization
Examples include the polymerization of ethylene to form polyethylene and the condensation polymerization of nylon
I applied via Walk-in
X factor in IS 10262 2019 refers to the factor used to calculate the water content in concrete mix design.
X factor is used to determine the water content required for a specific workability of concrete.
It takes into account factors such as the grading of aggregates, maximum size of aggregate, and the type of cement used.
The X factor is calculated using a formula specified in IS 10262 2019.
For example, a higher X factor...
The new code IS 10262 has updated guidelines for concrete mix design.
The new code provides revised recommendations for water-cement ratio.
It includes updated specifications for aggregate grading.
There are changes in the guidelines for admixtures usage.
The code now emphasizes on the importance of testing and quality control measures.
Example: The new code specifies a maximum water-cement ratio of 0.45 for reinforced conc...
I applied via Recruitment Consulltant and was interviewed before Apr 2022. There were 4 interview rounds.
I applied via Company Website and was interviewed before Dec 2021. There were 3 interview rounds.
I applied via Job Portal
Chemist
Written test
First round includes a written test and an interview.
I applied via Company Website and was interviewed in Dec 2023. There was 1 interview round.
I was interviewed in Jun 2023.
Analytical skills and reasoning
Polymer chain breakdown occurs through processes like thermal degradation, photo-oxidation, and mechanical degradation.
Thermal degradation: Polymer chains break down due to exposure to high temperatures, leading to chain scission and formation of smaller molecules.
Photo-oxidation: Polymer chains degrade when exposed to light and oxygen, causing chain scission and formation of carbonyl groups.
Mechanical degradation: Pol...
Polymer preparation involves polymerization of monomers to form long chains of repeating units.
Polymerization is the process of combining monomers to form polymers
Monomers can be combined through addition, condensation, or ring-opening polymerization
Examples include the polymerization of ethylene to form polyethylene and the condensation polymerization of nylon
I applied via Naukri.com and was interviewed in Dec 2023. There were 2 interview rounds.
Instrument knowledge
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