D.R.POLYMERS Interview Questions and Answers

QC focuses on testing the final product, while ADL focuses on testing the process and raw materials.

• QC is done on finished products, while ADL is done on raw materials and process

• QC is reactive, while ADL is proactive

• QC is concerned with product quality, while ADL is concerned with process quality

• QC is done by quality control department, while ADL is done by analytical development department

To make 0.1N NaOH from 1N NaOH standard solution, dilute 10 mL of 1N NaOH with distilled water to a final volume of 100 mL.

• Measure 10 mL of 1N NaOH solution

• Transfer the measured solution to a 100 mL volumetric flask

• Add distilled water to the flask until the volume reaches 100 mL

• Mix the solution thoroughly to ensure uniformity

HPLC and GC are both analytical techniques used in chemistry, but they differ in the type of samples they can analyze.

• HPLC stands for High Performance Liquid Chromatography, while GC stands for Gas Chromatography.

• HPLC is used for analyzing samples that are soluble in liquid, while GC is used for analyzing samples that can be vaporized.

• HPLC uses a liquid mobile phase and a solid stationary phase, while GC uses a gas mobile phase and a solid or liquid stationary phase.

• HPLC is m...read more

The question covers various topics in organic chemistry including named reactions, NMR spectroscopy, and general concepts.

• Named reactions are specific organic reactions that have been given a name to make them easier to remember and discuss. Examples include the Grignard reaction and the Diels-Alder reaction.

• NMR spectroscopy is a technique used to determine the structure of organic molecules by analyzing their nuclear magnetic resonance. It can provide information about the n...read more

Habber process is used to prepare ammonia by reacting nitrogen and hydrogen under high pressure and temperature.

• The process was developed by Fritz Haber and Carl Bosch in early 20th century.

• The reaction takes place in presence of iron catalyst.

• The optimum conditions for the reaction are 200-300 atm pressure and 400-550°C temperature.

• The reaction is exothermic and releases heat.

• The produced ammonia is used as a fertilizer and in the production of various chemicals.