Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

stability study is going on up to 3years for famotidine-USP but the pharmacopeia is revised and tlc test is replaced with hplc test. At the 4th year frequency the product is failed in hplc test .how can i assain the expiry or retest date and can i stop or continue the programme?

Nakoda Chemicals,

2 6740

how to correct peak when peak comes broader in shape? How to do calibration of HPLC?

Mankind,

2 8486

why bottles of Hazardous chemicals or solvent are available in round shaped only?

Pfizer,

1 4808

HOW TO CALIBRATE HPLC OVEN

Mylan,

1 6818

What is importance of pH in the Heavy metal test and How it effect on the test results?

2341

which light is used in FT-IR spectroscopy

Hetero,

6 18749

Please do not join if u got offer in oncotherapies ltd (STRIDESARCOLAB)especially Mr.Mahesh Bhatt team because job is not secure his team and doesn't have confidence on him becareful this offer?

Strides Arcolab,

1 4969

In partical size by malven,which parameter is generlly change for development of dry and wet method.

1 3451

As per ICH related substances stability trend limit from initial to shelf life

Medley Pharmaceuticals, Micro Labs,

3309

what is the difference between EP and BP

Novartis, Vimta Labs,

2 21284

Un-Answered Questions { Chemistry }

Why sodium hydroxide used for maintain pH of phosphate buffer

2489

For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1970

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

1934

Can a Nascent Hydrogen be used for fuel cell without damaging the equipment and if so how good would it be compared to other type of hydrogen.

2240

What is molar conductivity?

1102

How do you express the total hardness of water?

1186

What is titration?

1163

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

2233

mode of absorption in alimentary canal?

2436

Explain how many moles of hcl are present in .70 l of a .33 m hcl solution?

1093

Write the equation of photosynthesis?

1165

hi friends, dis is ramana reddy.i have been workining in bulk drugs as QC chemist.i would like 2 change d company.but our company didn't give d OFFER LETTER,APPOINTMENT LETTER,PAY SLIP.if any body has these documents along with sample RESUME,pls send 2 my mail id i.e ramanareddy.sdpl@ymail.com

2963

What is polar hcl?

1143

Define an origin of electrode potential? : Electrochemistry Corrosion

1150

What is wave number?

1187

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