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

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

How to calculate the signal to noise ratio.

Rakshit Drugs,

1 7518

Why pH range is 1-14 nt more than 14???

IPCA, Lincoln Pharmaceuticals,

3 9118

Weight balance variation limit during analysis

Amneal Pharmaceuticals,

7 10424

How to calculate lamp energy in hplc?

1 3991

Difference between related substances & impurities

Biocon,

2 18377

Polarized meter calibration, 1. Method name? 2. Which solution use? 3.why?

1 3799

Basic principle of ESI?

Cipla, GVK,

2151

What is the meaning of Base deactivated vials

Sun Pharma,

1 3629

What is definition of RRT and what is the difference between RT and RRT in HPLC

2 10582

What is the definition of RRF

2 6838

In GC Why does retention time decrease when temperature increases? Also how does a change in temperature effect selectivity?

Gland Pharma,

1 4002

why we use 0.1% acetone in gradient calibration of HPLC?

Cipla, Dr Reddys, FDC,

3 13889

What is difference between assay by Hplc and uv

Aizant, Fredun Pharmaceuticals, Hetero, Marksans Pharma,

2 10519

why we use actone for Gpv test in hplc calibration

1 10294

How to standardization of 1N H2SO4?

GNFC, Macleods,

1 8041

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Un-Answered Questions { Analytical Chemistry }

how will you do the prep for unstable componds?

2028

How we choose the mobile phase for method development.?

1212

cefoperozone and sulbactam inj. hplc test method

2691

why octanol used to determine the partition coefficient ?

2458

on the basis of bcs class how to proceed the solubility?

782

please explain about aluminium hydroxide assay

1132

Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2833

how require to fix the linearity and accuracy cincentration range?

1671

how to calculate elemental impurities?

1034

why we should take dst factor for below 1%moisture samples

2666

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

2545

What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

7544

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

9797

What is dose dumping? why require to do?

952

1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

1852

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