Lasons India Interview Questions, Process, and Tips

Self introduction & basic knowledge

Q1. Explain Hplc, Gc?
Ans. 
HPLC and GC are analytical techniques used in chemistry to separate, identify, and quantify components in a mixture.
• HPLC stands for High Performance Liquid Chromatography, used for separating compounds in a liquid mixture based on their interactions with a stationary phase and a mobile phase.

• GC stands for Gas Chromatography, used for separating compounds in a gas mixture based on their partitioning between a stationary...read more
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Q2. What is oxidation reaction, distillation its types?
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Oxidation reaction involves the loss of electrons, while distillation is a process of separating components based on their boiling points.
• Oxidation reaction is a chemical reaction in which a substance loses electrons.

• Distillation is a process of separating components in a liquid mixture based on their boiling points.

• Types of distillation include simple distillation, fractional distillation, and steam distillation.
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Q1. What is your Current CTC?
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Q2. How many expected CTC?
Ans. 
Expected CTC depends on the company, location, experience, and negotiation skills.
• Expected CTC can vary based on the company's budget and policies.

• Location plays a significant role in determining the expected CTC.

• Experience level of the candidate also influences the expected CTC.

• Negotiation skills can impact the final CTC offered by the company.
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Q1. Distillation types Why we choose this type
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Distillation types are chosen based on the properties of the substances being separated and the desired outcome.
• Different distillation types include simple distillation, fractional distillation, and steam distillation.

• Simple distillation is used for separating substances with significantly different boiling points.

• Fractional distillation is used when the boiling points of the substances are closer together.

• Steam distil...read more
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Q2. Mechanism preparation
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Q1. What are the types of Titrations
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There are several types of titrations, including acid-base, redox, complexometric, precipitation, and non-aqueous titrations.
• Acid-base titrations involve the use of an acid or base to neutralize a sample.

• Redox titrations involve the transfer of electrons between reactants.

• Complexometric titrations involve the formation of a complex between a metal ion and a ligand.

• Precipitation titrations involve the formation of a pre...read more
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Q2. What are the different techniques of Chromatography
Ans. 
Chromatography techniques separate and analyze mixtures based on their physical and chemical properties.
• Gas chromatography (GC)

• Liquid chromatography (LC)

• Ion exchange chromatography (IEC)

• Size exclusion chromatography (SEC)

• Affinity chromatography (AC)

• Thin layer chromatography (TLC)
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Q1. Describe about your self in brief What is distillation column What is priming
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