Chemistry Interview Questions
Questions Answers Views Company eMail

what is lithipone?

Dr Reddys, ONGC, Reddy Labs, Lupin,

6 12352

what is redox potential of an organic compound?

Reddy Labs, Lupin,

2 10747

what is saponification of oils?

Indian Potash Limited, Cipla,

2 9983

How 'salting out' process is used in extraction?

PH.D Interview,

2 12292

What are geometrical isomerism? Explain them with an example?

PH.D Interview,

1 8969

Mention the factors affecting solubility of compounds?

PH.D Interview,

9 10292

NH2-CH2-COOH belongs to what structure?

11 17708

what are ligases?which type of reactions they will catalyse?

1 3924

what happens when aminoacids react with alcohols?

Reddy Labs, GVK, Pharmaceutical, GVK Biosciences,

3 10389

what is the difference between coordinate covalent bond and covalent bond?

8 24136

what are the 4 classes of unsaturated fatty acids?

Snowcem Paints, College School Exams Tests,

1 2682

why the atomic weights are in fractions?

1 3862

Which is useful in the manufacture of Insectisides?

RR Enterprises,

2 3885

The Name Benzene was Proposed By?

GVK, Cipla, Torrent Pharma,

21 14349

Number of Sigma Bonds Present in Benzene are same as ..?


13 12292

Un-Answered Questions { Chemistry }

1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.


Why we are use glass viscometer, and what is calculation manual calculation formula as per USP. How many types of viscometre in glass type viscometer.


chlorination of methane is possible and a mixture of products are obtained. Is flourination and Bromination of methane is possible?


In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.


Why we check moisture,ash & AIA in product


2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.


is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth


Give lewis dot structure for HBrO4?


why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?


how to prepare for the exam of ongc please give some idea


Q1. Why did you enter the field of chemistry? Q2. What has motivated you to take chemistry as your professional subject and have you motivated anyone towards your field?


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


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?


In the calculation of calorific value of any fuel why the latent heat of vap. of water is taken as 587 kj/mol whereas actually it is 540kj/mol?


Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?