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Chemistry Interview Questions
Questions Answers Views Company eMail

Difference between related substances & impurities

Biocon,

2 17032

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

 1 3074

Basic principle of ESI?

Cipla, GVK,

1630

What is the meaning of Base deactivated vials

Sun Pharma,

1 2725

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

 2 8845

What is the definition of RRF

 2 5744

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

Gland Pharma,

1 3116

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

Cipla, Dr Reddys, FDC,

3 12250

What is difference between assay by Hplc and uv

Aizant, Fredun Pharmaceuticals, Hetero, Marksans Pharma,

2 9206

why we use actone for Gpv test in hplc calibration

 1 9280

How to standardization of 1N H2SO4?

GNFC, Macleods,

1 7038

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

 1353

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

 1 2405

what are the reasons to get the low transmittansE in FTIR

Dr Reddys,

2 3324

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

 1 2068

Un-Answered Questions { Chemistry }

WHAT IS THE PARAMETER FOR THE SELECTION OF MOBILE PHASE IN HPLC?

630

What is delay volume?

834

In the isomers,enantiomers give the only physical properties present such that no chemical properties present.

1765

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

267

How you develop a method in HPLC?

2065




in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?

318

What is mean by PDR?

318

why we are using hexane in calibration of number of drop per mL

1157

Can you provide a brief overview of the properties and characteristics of the chemical element Actinium?

106

how we can identify the impurity is coming below loq at transfering site?

370

Define hydra?

610

Identify problem faced when mass spectroscopy is used with HPLC system ?

1367

what is mean by dissolution hydrodynamics?

335

inhouse product is in capsule form in combination and RLD is in tablet form then can we proceed for multimedia CDP? in inhouse capsule product disso is paddle with sinker in release media is there then RLD product in tablet form then with same as paddle with sinker we can proceed n.a.?

278

How are pka and strength of a weak acid related?

581

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