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O2H Group Interview Questions, Process, and Tips

Updated 18 Jan 2025

Top O2H Group Interview Questions and Answers

View all 8 questions

O2H Group Interview Experiences

Popular Designations

7 interviews found

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Contains 3 sections- Aptitude ,English and Reasoning

Quality Analyst Interview Questions asked at other Companies

Q1. How you will maintain the balance between operations and quality so that they do not have any conflicts of interest
View answer (3)

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Interview experience
5
Excellent
Difficulty level
-
Process Duration
Less than 2 weeks
Result
-

I applied via Walk-in and was interviewed in Dec 2024. There was 1 interview round.

Round 1 - Aptitude Test 

It was good test with mathematical learning

Software Developer Interview Questions asked at other Companies

Q1. Maximum Subarray SumGiven an array of numbers, find the maximum sum of any contiguous subarray of the array. For example, given the array [34, -50, 42, 14, -5, 86], the maximum sum would be 137, since we would take elements 42, 14, -5, and ... read more
View answer (38)
O2H Group Interview Questions and Answers for Freshers
illustration image
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via campus placement at Vel tech multitech dr.rangarajan dr.sakunthala engineering college, Chennai and was interviewed in Sep 2024. There was 1 interview round.

Round 1 - Aptitude Test 

It was pretty easy focusing on quantitative aptitude

Business Analyst Interview Questions asked at other Companies

Q1. You have 10 boxes of balls (each ball weighing exactly10 gm) with one box with defective balls (each one of the defective balls weigh 9 gm). You are given an electronic weighing machine and only one chance at it. How will you find out which... read more
View answer (8)
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

About full stack, and personal development

Round 2 - Coding Test 

Coding and skill based test

Full Stack Software Developer Interview Questions asked at other Companies

Q1. Oops in Java Patterns in Java JDK,JRE,JVM MVC Array questions strings in Java This,super keywords Java problems like palindrome, prime number,and so many problems and logics Why java is platform independent Why java is not platform dependen... read more
View answer (1)

O2H Group interview questions for popular designations

 Business Analyst

 (1)

 Full Stack Software Developer

 (1)

 Organic Chemist

 (1)

 Quality Analyst

 (1)

 Research Associate

 (1)

 Researcher

 (1)

 Software Developer

 (1)

Interview Questionnaire 

8 Questions

  • Q1. 1.How to convert ester to aldehyde?
  • Ans. 

    Esters can be converted to aldehydes by hydrolysis under acidic conditions.

    • Esters can be hydrolyzed to aldehydes using a strong acid, such as sulfuric acid or hydrochloric acid.

    • The reaction involves the cleavage of the ester bond and the formation of a carboxylic acid intermediate, which is then further reduced to an aldehyde.

    • The reaction can be carried out at elevated temperatures or using a catalyst, such as p-toluen...

  • Answered by AI
  • Q2. Bromintion on aniline and toluene what will be desired product?
  • Ans. 

    The desired product of bromination on aniline is 2,4,6-tribromoaniline. The desired product of bromination on toluene is bromotoluene.

    • Bromination on aniline results in the substitution of three bromine atoms on the aromatic ring, yielding 2,4,6-tribromoaniline.

    • Bromination on toluene results in the substitution of one bromine atom on the aromatic ring, yielding bromotoluene.

  • Answered by AI
  • Q3. Griganard reaction on aldehyde what will be a product,
  • Ans. 

    The Grignard reaction on an aldehyde will produce a secondary alcohol.

    • The Grignard reaction involves the addition of a Grignard reagent (organomagnesium compound) to an aldehyde or ketone.

    • The reaction proceeds through the formation of a carbon-carbon bond.

    • In the case of an aldehyde, the product will be a secondary alcohol.

    • For example, the reaction of formaldehyde (HCHO) with a Grignard reagent such as methylmagnesium b...

  • Answered by AI
  • Q4. What is Diasteromer and enansiomer
  • Ans. 

    Diastereomers and enantiomers are types of stereoisomers that differ in their spatial arrangement.

    • Diastereomers are stereoisomers that have different configurations at one or more chiral centers but are not mirror images of each other.

    • Enantiomers are stereoisomers that are non-superimposable mirror images of each other.

    • Diastereomers have different physical and chemical properties, while enantiomers have identical physi...

  • Answered by AI
  • Q5. How will be synthesised biaryl product?
  • Ans. 

    The biaryl product can be synthesized through a variety of methods.

    • One common method is the Suzuki-Miyaura cross-coupling reaction.

    • Another method is the Buchwald-Hartwig amination reaction.

    • Transition metal-catalyzed C-H activation can also be used.

    • Examples of biaryl products include biphenyl and terphenyl.

  • Answered by AI
  • Q6. What is the mathod for prepration of amide?
  • Ans. 

    The method for preparation of amide involves the reaction between a carboxylic acid and an amine.

    • Amides can be prepared by the reaction of a carboxylic acid with an amine in the presence of a dehydrating agent.

    • The reaction typically requires heating and can be catalyzed by an acid or base.

    • The resulting product is an amide, which contains a carbonyl group bonded to a nitrogen atom.

    • Example: The preparation of acetamide c...

  • Answered by AI
  • Q7. Proton Nmr peak of methyl aldehyde
  • Ans. 

    The proton NMR peak of methyl aldehyde appears as a singlet at around 9-10 ppm.

    • The proton NMR spectrum of methyl aldehyde shows a singlet peak.

    • The chemical shift of the peak is typically around 9-10 ppm.

    • The singlet peak indicates that the methyl aldehyde molecule has no neighboring protons.

  • Answered by AI
  • Q8. Mass spectra of bromo chloro containing compuond
  • Ans. 

    Mass spectra of bromo chloro containing compound

    • Bromo chloro compounds can have multiple isomers with different mass spectra

    • The presence of bromine and chlorine atoms can cause fragmentation in the mass spectrum

    • The mass spectrum can be used to determine the molecular weight and structural information of the compound

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - These are good question from basic chemistry. 90% student resently passed out msc in chemistry they can ans. But pharma company want to practical work. They cant picup the condidats who has good theoritical but practical hand is zero. How to handle column negative temp. Reaction all etc. More important is practical knowledge as well searching of data paper and purification techinq.

Top O2H Group Research Associate Interview Questions and Answers

Q1. Bromintion on aniline and toluene what will be desired product?
View answer (3)

Research Associate Interview Questions asked at other Companies

Q1. Tell any name reactions to form new c-c bond without metal catalyst?
View answer (14)

Researcher Interview Questions & Answers

user image Anonymous

posted on 7 Apr 2024

Interview experience
2
Poor
Difficulty level
Hard
Process Duration
-
Result
Not Selected

I was interviewed before Apr 2023.

Round 1 - Aptitude Test 

Reasoning ,maths English grammar, chemistry

Round 2 - HR 

(1 Question)

  • Q1. Expected CTC. ?

Researcher Interview Questions asked at other Companies

Q1. What are the different types of drug regulatory bodies ? A. FDA ,NMPA,CDSCO,MDL,EMEA
Add answer

Organic Chemist Interview Questions & Answers

user image Nilam Mhaske

posted on 27 May 2021

I applied via Campus Placement and was interviewed in Nov 2020. There were 7 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Reacemise, geometric isomers,hetrochemistry , Coupling reaction etc.

Interview Preparation Tips

Interview preparation tips for other job seekers - Good communication, good chemistry knowledge,technic, practical hand

Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed in Jul 2023. There were 2 interview rounds.

Round 1 - Technical 

(4 Questions)

  • Q1. What is azure PAAS , IAAS , SAAS ?
  • Ans. 

    Azure PAAS, IAAS, and SAAS are different cloud service models provided by Microsoft Azure.

    • PAAS (Platform as a Service) - Provides a platform for developers to build, deploy, and manage applications without worrying about infrastructure.

    • IAAS (Infrastructure as a Service) - Provides virtualized computing resources over the internet, such as virtual machines, storage, and networking.

    • SAAS (Software as a Service) - Delivers...

  • Answered by AI
  • Q2. What is Dependency Injection ? How is dependency Injection achieved ?
  • Ans. 

    Dependency Injection is a design pattern in which a class receives its dependencies from external sources rather than creating them itself.

    • Dependency Injection helps in achieving loose coupling between classes.

    • It allows for easier testing and maintenance of code.

    • There are three common ways to achieve Dependency Injection: Constructor Injection, Setter Injection, and Interface Injection.

  • Answered by AI
  • Q3. Difference between dotnet 6 and dotnet 5
  • Ans. 

    Dotnet 6 is the latest version with new features and improvements over Dotnet 5.

    • Dotnet 6 has improved performance and reduced memory usage compared to Dotnet 5.

    • Dotnet 6 introduces Hot Reload feature for faster development iteration.

    • Dotnet 6 includes support for MAUI (Multi-platform App UI) for building cross-platform apps.

    • Dotnet 6 has enhanced support for cloud-native applications and microservices.

    • Dotnet 6 includes im...

  • Answered by AI
  • Q4. What is azure functions ? what is the difference between azure functions and logic apps
  • Ans. 

    Azure Functions is a serverless compute service that allows you to run event-triggered code without managing infrastructure.

    • Azure Functions is used for running small pieces of code or 'functions' in the cloud.

    • It is event-driven and can be triggered by various Azure services or external sources.

    • Azure Logic Apps is a workflow automation tool that allows you to automate business processes by connecting various services an...

  • Answered by AI
Round 2 - Technical 

(4 Questions)

  • Q1. Explain the use of interfaces . when will you use interface vs when will you use abstract class ?
  • Ans. 

    Interfaces define a contract for classes to implement, while abstract classes provide partial implementation.

    • Use interfaces when you want to define a contract that multiple classes can implement.

    • Use abstract classes when you want to provide some common functionality to multiple classes.

    • Interfaces support multiple inheritance, while classes can only inherit from one abstract class.

    • Interfaces are used for loose coupling ...

  • Answered by AI
  • Q2. Explain Solid principles
  • Ans. 

    Solid principles are a set of five design principles for writing clean, maintainable, and scalable code.

    • Single Responsibility Principle (SRP) - A class should have only one reason to change.

    • Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modification.

    • Liskov Substitution Principle (LSP) - Objects of a superclass should be replaceable with objects of its subclasses without affe...

  • Answered by AI
  • Q3. Test driven Development , azure Deployment , mocking test in dot net applications
  • Q4. Explain your own use of Logic apps and service bus .
  • Ans. 

    I use Logic Apps for automating workflows and Service Bus for reliable messaging.

    • I use Logic Apps to create automated workflows for integrating various systems and services.

    • I leverage Service Bus for reliable messaging between different components of a distributed system.

    • For example, I have used Logic Apps to automate data transfers between CRM systems and databases, and Service Bus for decoupling microservices in a cl

  • Answered by AI

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
No response

I applied via Approached by Company and was interviewed in Aug 2023. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Technical 

(2 Questions)

  • Q1. Explain Behaviour subject in Angular.
  • Ans. 

    Behaviour subject in Angular is a special type of subject that allows both subscribing and emitting values.

    • BehaviourSubject is a type of subject in RxJS library.

    • It has an initial value that will be emitted to new subscribers.

    • It stores the latest value and emits it immediately to new subscribers.

    • Example: const subject = new BehaviorSubject('initial value');

    • Example: subject.next('new value');

  • Answered by AI
  • Q2. Explain Design Principles
  • Ans. 

    Design principles are guidelines for designing software solutions that are maintainable, scalable, and efficient.

    • Design principles help in creating software that is easy to understand, modify, and maintain.

    • They promote code reusability, modularity, and flexibility.

    • Examples of design principles include SOLID principles, DRY (Don't Repeat Yourself), KISS (Keep It Simple, Stupid), and YAGNI (You Aren't Gonna Need It).

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare the interview questions which are asked in portals.

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
Easy
Process Duration
2-4 weeks
Result
Not Selected

I applied via Indeed

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all Resume tips
Round 2 - Screening 

(1 Question)

  • Q1. How your qualifications and experience aligns with the job requirements?
Round 3 - Group Discussion 

Focused on instrumentation techniques such as nanoparticles characterization, protein characterization methods

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O2H Group Interview FAQs

How many rounds are there in O2H Group interview?
O2H Group interview process usually has 1-2 rounds. The most common rounds in the O2H Group interview process are Aptitude Test, Coding Test and HR.
How to prepare for O2H Group interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at O2H Group . The most common topics and skills that interviewers at O2H Group expect are Analytical Method Development, HPLC, LCMS, SFC and Accounting Operations.
What are the top questions asked in O2H Group interview?

Some of the top questions asked at the O2H Group interview -

  1. Bromintion on aniline and toluene what will be desired produ...read more
  2. 1.How to convert ester to aldehy...read more
  3. Griganard reaction on aldehyde what will be a produ...read more

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