Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

solvents used in NMR

Laurus,

2 4350

what does 'n' stands for in spectroscopy?give the formula.

Laurus,

1043

define beer-lambertslaw.

Laurus,

5 8681




difference between precision & accuracy.

Laurus,

1 8206

formula for %RSD.

Laurus,

4 10129

which chromatographic technique is used for softening hard water?

Laurus,

1 4565

Nitrogen test is used for which chromatography?

Laurus,

1 4859

what are the primary standards of redox titrations?Name any two.

Laurus,

2 6103




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

Laurus,

919

mode of absorption in alimentary canal?

Sun Pharma,

1105

why we calibrate ph meter and balance daily.....but hplc and uv requires quaterly?

Apotex, UPL,

5 14100

why we are use metthanol variously in kfr?why don't use other solutions?

4 7748

when we use capillary and packed columns in gc

Rakshit Drugs,

4 5900

what is the difference between IR and FTIR instrument analysis

2 8240

how can give the expiry period and restadardisation of volumetric solution

Meenaxy Pharma, SRF,

1246


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Un-Answered Questions { Analytical Chemistry }

What is the acceptance criteria for moisture balance when calibrated with sodium sulfate

615


we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

434


can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

863


What is the pilot-plant in pharma sector.

924


Principle of single pan analytical balance

3563






1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.

1036


What is the difference between BD

702


how much mass should be there in volumetric flask while in preparation of sample for assay? 

1105


How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.

1165


AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

795


What is diffrence between extractable volume and deliverable volume? Answer pls

625


What is the diference between residual solvents and organic volatile matter

626


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.

735


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

673


using gradient pressure in gas chromatography are not ?using gradient pressure why

2076