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

in HPLC injection volume is increase ,R.T will increase ?

Claris Lifesciences,

5 10003

Distinguish b/w CH3CHO and CH3COCH3 on the basis of IR?

1 6068

How to caluculate the RRF and correction factor in hplc

Alkem Labs, Aurobindo, Rakshit Drugs, SDLPL,

1 14391

What is the optimum period of storage of indicators?

Orchid Chemicals and Pharmaceuticals,

1 4399

what is the most common FT-IR source used for the MID&Near IR regions?

Dr Reddys, Piramal Enterprises,

1 5406

How much carbon loading in nomalphase columns?

5 7862

Chromatographic Purity is a Qualitative analysis

Shasun Chemicals,

2 5430

what is the limit for KF Factor ,we take factor using water we will found factor between 6 to 7 ,while on KF Reagent bottle mentioned 5 mg/ml water content.if we not use dried methanol it is effect on factor.

Atul,

1 2813

What is the basicity/acidity of na2co3

DELL, DSP,

1 9464

Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?

2738

Why we use methanol as solvent in kf standardisation. Why not other solvent?

Caplin Point, Epione Labs, Hetero,

2 6965

What is deference between the working standard and reference standard?

Gland Chemicals, Meghmani Organics,

1 2955

Suppose we prepared pH buffer solution in lab.and calibrate against NIST solution, and same shall going to used upto 30 days. is it possible to stable pH and appearance? suggest?

Meghmani Organics,

1901

What is use of acetonitrile compare to methanol in RP-HPLC Method development?

Meghmani Organics,

2000

When we get Moisture content by KF higher than by LOD, what does this indicate?

Meghmani Organics,

1 3331

Un-Answered Questions { Chemistry }

Explain the ionic equation for hcl-naoh?

1039

if your product is soluble in 0.1n hcl and water then which you choose as media from these 2 media?

686

What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

8868

What is a proteic unit?

2708

Is benzene aromatic?

1192

What is the requirement for brazil in the analytical method vslidation comparr to ich?

788

what is %labelled amount in content uniformity of dosage unit and its calculation?

5245

Differentiate between organic and inorganic chemistry?

1015

What is the difference between a heterogeneous and a homogeneous catalyst? What are some of the advantages of homogeneous catalysts? : Polymer Chemistry

1012

how to develop the icp ms method? Application of icp ms?

815

How to find peaks in ftir chromatography

1687

if content uniformity passing but dissolution varrying then what is next step?

886

all types of questions asked at the cipla interview

4687

why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space

2271

What are the inorganic material eliminated in Sulphated Ash

3345

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