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

Why is maximum pH14. Why does it range from 0-14 only?

IISER,

4 8872

PLease give me the list of normal phase hplc column

Micro Labs,

3 7534

Why purity angle should be less than purity threshold in peak purity

4316

Suppose u have combipack product and u get 2 or more peaks which are other than there placebo then what we can do

2374

What is the principle of Particle size analysis and zeta potential

2697

suppose u got 2 or more maxima in the uv spectrophotometer then what u can do

Hetero,

2 5324

What is the difference between specified impurity and Identified impurity

Glenmark,

3 16414

What is the difference between specified impurity and Identified impurity

Merchant Navy,

1 6181

how do you established the RRF for unknown impurity

Square Pharma,

6 13431

I want analyze my compound at 325 nm so which standard shall i use to calibrate my HPLC system? How i can assure my hplc detector is suitable or not?

AMRI,

3 10314

What is the temperature

Reddy Labs,

1 8216

How we will choose pH of a mobile phase if analyte pKa value is 4

Celon Labs, Laurus,

2 11516

what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

DRL, Laurus,

3752

Which column is more polar, C8 or C18?

Cipla, Glenmark, Laurus, Torrent Power,

6 30671

what is the difference between heavy metals and sulphated ash

Aurobindo,

2 18256

Un-Answered Questions { Chemistry }

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

2602

What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

7612

why we use glass fiber filters use in some situation?

859

What is the role of mercuric sulphate?

1162

Any one is alembic pharmaceutical ltd. On starting to job ?

1724

What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

2768

Why to use propyl paraben in HPLC gradient calibration

7610

what is turbidimetric titration?Give 2 examples.

2747

Name the three elements which are forms carbohydrates?

1074

how to calculate elemental impurities?

1093

process of Diclofenac sodium,IP.

2298

Explain what is the chemical formula of detergent?

1053

4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

2780

Explain the properties of carbohydrates?

1087

Why is ammonia added? Why is that same amount of ammonia added?

1051

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