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

General Chemistry (478)
Chemistry AllOther (190)

Chemistry Interview Questions

Questions Answers Views Company eMail

in HPLC injection volume is increase ,R.T will increase ?

Claris Lifesciences,

5 9986

Distinguish b/w CH3CHO and CH3COCH3 on the basis of IR?

1 6065

How to caluculate the RRF and correction factor in hplc

Alkem Labs, Aurobindo, Rakshit Drugs, SDLPL,

1 14380

What is the optimum period of storage of indicators?

Orchid Chemicals and Pharmaceuticals,

1 4393

what is the most common FT-IR source used for the MID&Near IR regions?

Dr Reddys, Piramal Enterprises,

1 5393

How much carbon loading in nomalphase columns?

5 7842

Chromatographic Purity is a Qualitative analysis

Shasun Chemicals,

2 5418

what is the limit for KF Factor ,we take factor using water we will found factor between 6 to 7 ,while on KF Reagent bottle mentioned 5 mg/ml water content.if we not use dried methanol it is effect on factor.

Atul,

1 2801

What is the basicity/acidity of na2co3

DELL, DSP,

1 9458

Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?

2728

Why we use methanol as solvent in kf standardisation. Why not other solvent?

Caplin Point, Epione Labs, Hetero,

2 6954

What is deference between the working standard and reference standard?

Gland Chemicals, Meghmani Organics,

1 2942

Suppose we prepared pH buffer solution in lab.and calibrate against NIST solution, and same shall going to used upto 30 days. is it possible to stable pH and appearance? suggest?

Meghmani Organics,

1898

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

Meghmani Organics,

1996

When we get Moisture content by KF higher than by LOD, what does this indicate?

Meghmani Organics,

1 3319

Un-Answered Questions { Chemistry }

could negative ions be produced by bombardment process in mass spectrometry?

1781

How is arsenic produced?

1060

Did anybody have method for acetyl cysteine effervescnce tablet

2254

Give lewis dot structure for HBrO4?

9804

what is %labelled amount in content uniformity of dosage unit and its calculation?

5237

In IR spectra, generally a molecule vibrates without apply emr or ir light?

1981

Describe the role of Protactinium in neutron sources and its significance for research in nuclear physics.

575

why require to add enzymes in capsules dissolution only? is it require to tablet also?

679

what is meaning of wet analysis.

5747

in each media we require to use SLS? how to proceed?

787

what is mean by ambient temperature?

916

how do you make a amine sugar

2367

How require to perform linearity as per ANVISA? What are the acceptance criteria?

1337

In rs method development when we are going area normalization method to dilute standard method?

1525

Explain what are the hydrocarbons?

1078

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