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Chemistry Interview Questions
Questions Answers Views Company eMail

I have 1 gram of Diphenylamine and want to make a 10,000 or 1000 ppm solution in methanol. How do I make this?

Midas Technologies,

9 16760

Why forced degradation studies are performed in hplc method validation?

Apex,

6 26016

why base line not starts from zero in gc?

Aurobindo, FDC, Reddy Labs,

1 10366

how to regulate noise in HPLC?

Alkem Labs, Vimta Labs,

2 7858

What is split

Vimta Labs,

4 13492

What is the purpose & importance of using the polystyrene film in ir calibration?

Vimta Labs,

3 14031

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

Reddy Labs, Vimta Labs,

2894

why 1.2%kcl solution is using in limit os straylight?and why this test used for uv calibration?

Graviti Pharmaceuticals, Reddy Labs, Vimta Labs,

1 8407

why 0.02% solution toluene &noHexane using in uv calibration?

Graviti Pharmaceuticals, Orbit Pharma, Ranbaxy, Vimta Labs,

1 9070

what is the peak purity concept?

Graviti Pharmaceuticals, Vimta Labs,

5 29128

why phepolphthalene giving pink color when we titrate against to NaOH Solution ,giving colrless titrating aginsiting with acids?

Graviti Pharmaceuticals, Vimta Labs,

2 5862

why ph electrode is storing in KCL solution?Why the pH max is 14.0?

Cadila, Vimta Labs,

5 20650

Why Na lamp is used in polarimeter?

Vimta Labs,

5 16412

why is salt andv ice used in liquifyiny SO2

Graviti Pharmaceuticals,

1 5012

What is pooled sample in Dissolution

Graviti Pharmaceuticals, Lupin,

2 22983


Un-Answered Questions { Chemistry }

why we shrink our body during cold

1839


Protactinium-233 can be bred from Thorium-232. Describe the process of breeding Protactinium-233 and its significance for nuclear fuel production.

692


Why ph scale range is 14?

1168


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

2618


in which situation require to take incident in validation?

1789


Write the each half cell reaction and also net cell reaction for a cell

2976


Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

2661


Name the 4 physical states of matter?

1102


Which form of Sucores is harmfull to humans ?

2347


How can we calculate offset value pH measurment

1559


write short note on stero electronic factor, steric control factor and product control factor

2114


Explain the chemical formula for dichromate?

1143


What is the calibration of uv process and preparation

2049


Define an electrochemical corrosion. What are the types of electrochemical corrosion? : Electrochemistry Corrosion

1040


Why are the titration involving edta carried out slowly towards the end point?

1249