Chemistry Interview Questions
Questions Answers Views Company eMail

what is lithipone?

Dr Reddys, ONGC, Reddy Labs, Lupin, Jubilant,

6 16818

what is redox potential of an organic compound?

Reddy Labs, Lupin, Glenmark, Dr Reddys,

2 14193

what is saponification of oils?

Indian Potash Limited, Cipla,

2 13031




How 'salting out' process is used in extraction?

PH.D Interview,

2 14761

What are geometrical isomerism? Explain them with an example?

PH.D Interview,

1 10870

Mention the factors affecting solubility of compounds?

PH.D Interview,

9 12463

NH2-CH2-COOH belongs to what structure?

Dr Reddys,

11 22335

what are ligases?which type of reactions they will catalyse?

1 5142

what happens when aminoacids react with alcohols?

Reddy Labs, GVK, Pharmaceutical, GVK Biosciences,

3 13506

what is the difference between coordinate covalent bond and covalent bond?

Flamingo Pharmaceuticals,

9 27724

what are the 4 classes of unsaturated fatty acids?

Snowcem Paints, College School Exams Tests,

1 3991

why the atomic weights are in fractions?

1 5515

Which is useful in the manufacture of Insectisides?

RR Enterprises,

2 5037

The Name Benzene was Proposed By?

GVK, Cipla, Torrent Pharma,

22 18606

Number of Sigma Bonds Present in Benzene are same as ..?

Cipla,

13 16107







Un-Answered Questions { Chemistry }

WHY given much noise PDA dector then VWD Dector

817


Difference between hlaf and rlaf

851


Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?

1035


How will you calculate how many moles of glucose present in 320 ml of 5.0 m of glucose solution?

13


Why we check moisture,ash & AIA in product

675






My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

387


what is the principle involved in turbidometry and nephelometry ?

2801


why using HCLO4 in potentiometry?. what are the chacterestics of HCLO4.

2400


How to determine water content of bis tetrazole amine mono ammonium salt

2157


What is use of acetonitrile compare to methanol in RP-HPLC Method development?

766


What is molar conductivity?

4


What is glacial acetic acid? What are its uses?

1


What is the difference between c8 and c18 hplc column?

11


IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

1351


whether ter weight is require when doing the water standerdisation

808