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

What is difference between known and unknown impurities

Sun Pharma,

1 2622

What is the difference between Assay and Purity?

1608

What is the difference between known and unknown impurities?

1 3262

why we are using hexane in calibration of number of drop per mL

1798

Why we have to add 200mg Na2CO3 in preparation of 0.1N sodium thiosulfate solution?

1634

Why to use propyl paraben in HPLC gradient calibration

Glenmark,

7598

Why potassium dichromate was using in Uv calibration?

1 3890

%lod always grater than %water content for same product??

1 2705

We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

1971

How to define samples weight in moisture content

1 2610

what is acid and base

1 2272

what is NIR wave length

1469

What is AV value in test uniformity content ,describe calculation

Lupin,

1 3387

Why perchloric acid used for potentiometric titration

2737

What is differences between the Instrument and Equipment

Aurobindo,

2 3979

Un-Answered Questions { Chemistry }

why we are using hexane in calibration of number of drop per mL

1798

Related substance method equivalency on control sample or spiked sample?

824

What is the brigg's raucher reaction?

2390

what is silicon chip

2153

Is cyclotetrane aromatic?

1370

What is iron ore consists of?

1104

What is the principle of Thermal conductivity detector and FID?

2786

What is the Difference Between 3M KCL and 4M KCL, WHy We are Filling 3M KCL In electrode Instead of 4M KCL

2616

for which product require to do content uniformity? what is limit of cu?

883

What are the electrodes used in the measurement of ph for the determination of pka?

1341

What is the white precipitate produced at the end of point?

1058

what is mean by covalidation

834

In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

3558

How do you explain the different solvent power of water and other organic solvent?

2791

Why is the indicator eriochrome black(ebt) shows wine red color at the beginning and blue color at the end?

1517

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