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

how much tds is ok for drinking water

1 5588

1 why polyesterene film used for ftir calibration ? 2 why k2cr2o7 is used for control of abs in uv ? 3 why holmium oxide used for control of wavelength in uv

3 13083

what is the principal of malvern particle sizer & its used in pharma industry

3 9485

what is the difference between system precision and method precision?

Teva Pharmaceuticals,

3 37155

In lcms analysis some times we get sodium and potassium adducts. if the compound is havine sodium ions how can we confirm wether sodium is from sample or it is a adduct?

Teva Pharmaceuticals,

2 7765

How we can differentiate between oxalic acid and tartaric Acid?

5 14696

why we use sulphuric acid in the experiment of measure absorpance of K2Cr2O7 and KMnO4?

1 5965

how can karl fischer's titration be used to estimate alcohols??????

2797

what is difference between moisture contents and water contents ?

Cipla, Hetero, USM,

12 60569

pH is having unit?

Cipla,

8 13557

What is the easiest, (Less compound mixtures, basically), way to make coca.. ;)

2385

In GC, What does 'Column condensation test' mean by?

Reddy Labs,

2 11753

same sample on two preapration gives differnt result during hplc analysis

3 8612

what is titrent,& titrate

Graviti Pharmaceuticals,

2 13880

Why we are using a Kf Factor range 4 to 6

7 61121

Un-Answered Questions { Chemistry }

what are stereomers? how are they classified?

3482

mode of absorption in alimentary canal?

2436

Colorimtry

1708

in dissolution why pool sample needed? in which type of drug pool sample need?

3228

What is wave number?

1187

why are measure gas flow " ml " in Gas chromatography

1704

What modification is required for the atomic theory in order to explain the existence of isotopes, and modern view of atomic nuclei and electrons?

2303

What is column in chromatography?

2293

Differentiate between modern periodic table and mendeleevs table?

1221

What is the metal used to extract copper from the solution of copper sulphate?

1124

Why titration in which hcl and h2so4 is use?

1141

in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

890

Explain Thiele's structure for benzene. What is the difference between thiele's structure and modern structure (resonance hybrid) of benzene?

5314

Explain the dipole moment direction for methanol?

1173

why lead acetate s used in the Limit test of Arsenic? what role Lead Acetate plays????

17925

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