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Chemistry Interview Questions
Questions Answers Views Company eMail

Why use the Omeprazole as a reference standard to estimate the assay of esomeprazole by HPLC method

Student,

1 3896

are there in uv lamb that is chractrestic for wavelenghth 205 nm ?????

Beni Suef University, Graviti Pharmaceuticals, Sri Krishna Pharmaceuticals,

1 2034

Which of these bonds has the weakest bond energy? hydrogen bond electrovalent bond covalent bond metallic bond

College School Exams Tests, National Open University of Nigeria NOUN,

2 6821

In UV calibration we use Holmium perchlorate solution made in 1.4M perchloric acid The question is that 1.4 M perchloric acid we make is it in water or glacial acetic acid?

 4 11244

which effect is mainly responsible for chromatographic separation when silica is the statinary phase at TLC? thanks in advance

 1 3153

what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

 1527

what is accuracy formula with examples?

 1856

why in GC calibration of linearity regression coefficient should not be less than 0.999

Acacia, Jubilant,

1 5203

why don't we call POH meter? As we all as PH meter

Aurobindo,

4 7681

Why we are having specification 100% above in case of assay as there is only 100% of compound?

MSN Pharma, Nectar Lifesciences,

2 4997

why we are taking 89ml concentrated HCL for preparing 1N HCL

 3 8477

Calculate the water content in Di Sodium Tartrate (DST) based on molecular weight?

 3 9172

What are the terms used during Melting Range Analysis ?

 2 3544

As per USP u/vacuum means (how much vacuum should be applied)?

Mylan,

1 5116

what is difference between zero air gas and o2 gas

IPCA, Vasudha Pharma,

1 9133

Un-Answered Questions { Chemistry }

in hplc chromatogram started from left to right and in uv spectrum started from left to right

473

Explain the properties of carbohydrates?

547

if rsd failed then what require to do?

328

in dissolution why pool sample needed? in which type of drug pool sample need?

2598

Explain the relations between number of carbon atoms in alkanes and retention time ?

1632




What are the two most abundant elements in the universe?

587

how much time require for day to prepare the ongc exam for evarage student?

2533

How to fix the sample conc. in Related substances test by HPLC?

619

why do antimony and bismuth have the same electron affinities?

1952

How is the accuracy of the method determined?

633

What is polar hcl?

643

Explain the some importance of organic chemistry?

627

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

2074

We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?

1163

Explain why do some medications contain hcl?

636

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