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

Is it necessary to validate both assay and related substances for usp official methods for products.

Apotex,

6 14564

why we use a particular hplc column for a particular compound give reasons?please

Dr Reddys, Indoco Remedies, Natco,

2794

What is the difference between method validation and method verification

Biological.e.limited, Laurus,

1 6401

IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

Reddy Labs,

2511

why helium does not react with other elements?

3 7330

what is the difference between lod and loq?

Apotex, Aurobindo,

4 37625

What should be the level/ Percentage of Arsenic in Arsenic free zinc.

FDC, Laurus, Pharmaceutical,

2280

Assuming that the density of the solution is the same as the density of water (density of water=1.000g/ml), calculate the mass of water for both reactions using: mass of water = Volume of water Density of water. Mass of water =

Hetero, ONGC,

2595

What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?

Dr Reddys,

1 5266

why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

Cipla, Elder, Vamsi Labs,

1 9893

How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

2617

Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

CMET,

2791

why are not used methonol in kf titrator to find out water content in ketones?

Piramal Healthcare,

5 15527

Why are EDTA used to etimation of Ca,Mg etc, in Water analysis?

Reddy Labs,

3 10673

why we use kbr as constant in the FTIR ?

4 11118

Un-Answered Questions { Chemistry }

Why titration in which hcl and h2so4 is use?

1140

what is the purge flow & how to calculate

2741

How to synthesize methylene bisthiocyanate using CH2Cl2 and NaSCN?

3068

Why is the color of the indicator drop remains the same at the end point?

1295

which question ask me in grasim in inerview?

2288

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

1171

how you establish the LOQ?

852

Explain what are the hydrocarbons?

1124

How is the accuracy of the method determined?

1163

Which is the highly polar and highly non polar column in HPLC?

2352

What is the range of uv & vis lamp in spectrophotometer?

1169

What is the diference between residual solvents and organic volatile matter

2114

what kind of question can be asked in interview for UV- VISIBLE & give me answer ?

3892

Write the chemical formula for epsom salts?

1139

if you get peak in blank then what require to do?

1026

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