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Chemistry Interview Questions
Questions Answers Views Company eMail

Explain What is a base line in GC and HPLC?

Meghmani Organics,

2 4422

if relative response factor is 1.07, to select how much value

Natco,

1 4440

What is the use of ELSD in HPLC?

Anthem,

3 6616

Why pH limited in between 1 to 14

3 4276

What is difference between FID and TCD in gas chromatography

Cipla, VPCPL,

1 10443

What is the difference between high pressure gradient and low pressure gradient in hplc?

Cipla,

1 7301

what is dwell volume in HPLC?

Aurobindo, Cadila, Strides, SUN, Sun Pharma,

2 7936

what does pH stand for?

Orchid,

4 8493

why the pH scale range is 0-14?

Clariant, MIU, Torrent Pharma,

1 3127

What is principle of polarimetre

Aurobindo,

1 3463

Definition of beers_ lamberts law

Aarti Industries, Agio Pharmaceuticals, Emcure, Supriya Lifescience,

4 8368

Why monograph of hplc coming upperside of drift but in IR monograph coming in drift side?

1 4188

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

Zim Laboratories,

2346

Why the ph limit (1_14) Is used?

Cipla,

3 8374

why we use holomium oxide for UV calibration ?

Al Razi Pharmacy,

2 4912


Un-Answered Questions { Chemistry }

In performance Check of GC Why Hexadecane Peak is Considered 

3045


in sampling of raw material which side is pasted sampled labels

1838


is it nessesary to do solution stability for 7 days?

775


What are the factors which affect corrosion? : Electrochemistry Corrosion

925


in which situation require to change rs specification?

749


Explain why acetic has less conductivity than hcl?

1039


Explain the dipole moment direction for methanol?

1121


Describe the process of Actinium extraction from its primary sources and how it's obtained for various applications.

653


seminal on pyrimidine

2188


How tripod is used?

1161


How many millilitre is equal to 1 litre and how many microliter is equal to litre?

1098


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

1101


While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

2867


Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2833


how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

2602