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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why phepolphthalene giving pink color when we titrate against to NaOH Solution ,giving colrless titrating aginsiting with acids?

Graviti Pharmaceuticals, Vimta Labs,

2 4091

why ph electrode is storing in KCL solution?Why the pH max is 14.0?

Cadila, Vimta Labs,

5 17282

Why Na lamp is used in polarimeter?

Vimta Labs,

5 13543

why is salt andv ice used in liquifyiny SO2

Graviti Pharmaceuticals,

1 3767

What is pooled sample in Dissolution

Graviti Pharmaceuticals, Lupin,

2 20094

cefoperozone and sulbactam inj. hplc test method

Graviti Pharmaceuticals,

1881

how peak can be sharp in hplc when it is come flat

Graviti Pharmaceuticals,

6 16861

what is Fourier Transform

Graviti Pharmaceuticals, GVK,

3 7801

What is descriminatory disolution medium ?

Cipla, Graviti Pharmaceuticals,

3 8386

what is the difference between loss on drying in ordinary oven technique and vacuum oven technique

Divis Laboratories, Ranbaxy,

4 13275

what is the difference between the Purity and Potency of drug substance

Divis Laboratories, Graviti Pharmaceuticals,

1 10275

what is the difference between LOSS ON DRYING IN ORDINARY OVEN TECHNIQUE AND VACUUM OVEN TECHNIQUE

6 22757

why we are using only lead standard solution for Heavy metals test? what is the purpose of this?

Divis Laboratories,

4 11953

what is the difference between the ordinary loss on drying technique and vacuum oven technique?

Divis Laboratories,

1 7611

what is the difference between gc& hplc. why we r not calculating purity by gc for final products

Biocon, Cipla,

5 14662


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

if tech transfer fails whay require to do?

125


Why a1% value is used for some product ? What is the criteria for selection a1% value ?

1621


HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.

1572


WHY pKa value is more important than pH value of the mobile phase in HPLC?

1058


Which parameters require to do in tech transfer?

91






CAN WE DETERMINE THE PEAK PURITY IN GAS CHROMATOGRAPHY ANALYSIS?

496


when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

1341


Qc interview questions

1073


how you start RS method development when for new product?

106


if you get peak in blank then what require to do?

286


What is rs test why we are performing rs test?

1036


Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

2194


Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?

110


Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?

1197


What is the use of tlc and hplc? And when and where use?

496