Usha Yarns Senior Chemist Interview Questions and Answers

Q1. About previous experience and Education.
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Q1. Basic chemistry questions Instrumental questions Safety based some questions Chemical preparations Water analysis
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What is the term called directing groups ? Like this basic organic questions and reactions

Q1. Personal details and basic organic questions
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Q2. Structure of organic compounds and mechanism
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Organic compounds are composed of carbon atoms bonded together in various arrangements, with different functional groups determining their properties.
• Organic compounds contain carbon atoms bonded together in various structures

• Functional groups such as alcohols, aldehydes, ketones, and carboxylic acids determine the properties of organic compounds

• Mechanisms in organic chemistry involve the breaking and forming of chemic...read more
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Q3. Write about chlorination reagents
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Chlorination reagents are chemicals used to introduce chlorine atoms into organic compounds.
• Chlorine gas (Cl2) is a common chlorination reagent used in organic synthesis

• N-chlorosuccinimide (NCS) is another popular chlorination reagent

• Thionyl chloride (SOCl2) is used for chlorination of alcohols to form alkyl chlorides
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Q4. What are the main part of HPLC
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Main parts of HPLC include pump, injector, column, detector, and data system.
• Pump - used to deliver the mobile phase at a constant flow rate

• Injector - introduces the sample into the column

• Column - where the separation of compounds occurs

• Detector - detects the separated compounds as they elute from the column

• Data system - records and analyzes the detector output
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Q5. Do you have knowledgeable about distillation
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Yes, I have knowledge about distillation and its principles.
• I am familiar with the process of separating components of a liquid mixture based on differences in boiling points.

• I understand the setup and operation of distillation equipment such as distillation columns and condensers.

• I am aware of different types of distillation techniques like simple distillation, fractional distillation, and steam distillation.
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