Chemistry Interview Questions
Questions Answers Views Company eMail

Difference between related substances & impurities

Biocon,

2 16987

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

1 3055

Basic principle of ESI?

Cipla, GVK,

1618

What is the meaning of Base deactivated vials

Sun Pharma,

1 2697

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

2 8807

What is the definition of RRF

2 5712

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

Gland Pharma,

1 3092

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

Cipla, Dr Reddys, FDC,

3 12181

What is difference between assay by Hplc and uv

Aizant, Fredun Pharmaceuticals, Hetero, Marksans Pharma,

2 9187

why we use actone for Gpv test in hplc calibration

1 9233

How to standardization of 1N H2SO4?

GNFC, Macleods,

1 7016

Why ammonia is used as buffer solution in estimation of copper by EDTA method

1335

how does h2so4 prevent oxidation of mohr salt before it is titrated?

1 2381

what are the reasons to get the low transmittansE in FTIR

Dr Reddys,

2 3284

In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.

1 2049


Un-Answered Questions { Chemistry }

Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?

256


EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE

2100


How hydrate is forming along with API?

1779


why xterra column require to use at higher ph?

412


function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2040






How many electrons does benzene have?

566


hi i am siva icompleted m,sc in organic chemistry in 2008&working as alecturer can u send me the interview qusetions with answers . i expected that i got 135 - 140 marks is there any chance to get selection my interview is on may 7th 2010

1621


in OSD forms require to use gas chromatography?

312


What is modern definition(iupac) of ph?

685


Why is acetic acid added?

593


give clarity of linearity and range in method validation

1825


[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?

283


what is definition of validation? which components are followed give detail?

1797


why require to do water content for drug product?

289


in which situation require to take incident in validation?

710