Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

General Chemistry (478)
Chemistry AllOther (190)

Chemistry Interview Questions

Questions Answers Views Company eMail

WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

GVK,

2577

why do we adjusted ph in the mobilphase

Cipla, Dr Reddys, Reddy Labs,

9 25326

how are 31P NMR resonance differentiate phosphorous and phosphoric acid

1 4525

How to develop the method when we have very low amount of impurity?

2 8306

If we have 120 minutes run time method for HPLC and you wan to decrease the Run time so what should you do??

6 13858

Wath is the differenc between two column HPLC wich have the samme support , lenth , pore size, etc.. But different name .for exemple : Spherisorb / lichrosorb

NDA,

2 8068

WHAT IS PVT TEST IN DISSOLUTION TEST , WHAT IS PVT SIGNIFICANCE AND HOW IT IS PERFORMED ?

1 7551

2321

How you will select column for HPLC development depends on nature of compound and how it will work explain in brief?

3 10978

What is the role of SO2,I2, Methanolic hydroxide and any base in Karlficher titration

Medley Pharmaceuticals,

2 9277

The boiling point of 1,3 butadiene is -4.4 DC & the boiling point of Pentane is 36.1 DC. Then how come Pentane elute before 1,3 BD in GC analysis?

1 5455

what is the relation between Total organic carbon and Chemical Oxygen demand?

2918

What is Arsenic Test?

Flamingo Pharmaceuticals,

2504

What is the difference between Optical rotation and Spcefic optical rotation

IPCA, Matrix,

2 13561

why we use sodium salicylate in uv light calibration at TLC chamber

Aurobindo, Lee Pharma,

1 9042

Un-Answered Questions { Chemistry }

WHAT TYPE OF QUESTION ASK FOR POST SENIOR TECHNICAL ASSISTANT IN DRDO

8088

why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

9797

How is librated iodine estimated?

1092

What is the reaction that occurring between fas and potassium dichromate?

1280

Describe the process of Actinium extraction from its primary sources and how it's obtained for various applications.

650

During Soundness testing of Cement by Lechatelier method the Cement mould expands about 20 mm when merged in curing water for 24 hours after mould preparation.In that Cement MgO content is about 3.0%,SO3 is about 2.6% & Blaine is about 360 M2/Kg.Guess the reason & suggest solution.

3079

Why there is no bond with 100% ionic character...??

1819

What is an indicator electrode?

1291

Define an electrochemical corrosion. What are the types of electrochemical corrosion? : Electrochemistry Corrosion

980

why we use a particular hplc column for a particular compound give reasons?please

2752

What are the types of corrosion? : Electrochemistry Corrosion

1015

why salisylic acid not using now days for disdolution calibration?

772

What are modes of quantification in related substances

2163

How tripod is used?

1160

GIVE FTIR SAMPLING ASSESORY NAME.

2518

For More Un-Answered { Chemistry } Questions Click Here