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Chemistry Interview Questions
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When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason?? When a cool glass rod is suddenly heated, it cracks. Why?

 539

Why ph scale range is 14? Why it is not less or not greater than 14? Solution of hcl or hydrogen containing liquid has a ph. But if the solution is kmno4 here nothydrogen power does it ph?

 625

What is german silver?

 511

What is phase transfer catalyst?

 633

Why titration in which hcl and h2so4 is use?

 582

However ozone is heavier than oxygen still ozone is up there in sky why?

 540

What is mineral water?

 611

What is the difference between the working standard and reference standard?

 1 1290

WHAT IS THE PARAMETER FOR THE SELECTION OF MOBILE PHASE IN HPLC?

 639

CAN WE DETERMINE THE PEAK PURITY IN GAS CHROMATOGRAPHY ANALYSIS?

 700

What is the unit of ph?

 608

What is kentchin?

 586

Give the IUPAC name for [Co(NH3)5Cl] SO4

 595

What is hybridyzation?

 1 1730

What is the inorganic chemistry?

 1 1621

Un-Answered Questions { Chemistry }

How Many grams of solid iodine are produced by the decomposition of 25.4g of hydrogen iodine gas?

2375

why athanol-water mixtuere have maximum viscocity in wt% 40?

1267

What does stp stand for?

621

WHY pKa value is more important than pH value of the mobile phase in HPLC?

1251

What is colorimetry?

653




What is equivalent conductivity?

755

What is stray light in uv what are units for stray light

1016

Why ph scale range is 14? Why it is not less or not greater than 14?

664

Why is ammonia solution added while preparing edta solution?

844

what is classification of elemental impurities? what is risk assement in elemental impurities?

334

How to calibration of the uv spectroscopy and its test?

665

Sr-90, a radioactive isotope, is a major product of an atomic bomb explosion. It has a half life of 28.1 year. Calculate the first order rate constant for this nuclear decay and the fraction of 90Sr that remains after 10 half lives?

5719

Discuss the role of Actinium in neutron sources and its contribution to scientific research and advancements.

163

UV and PDA detector, which have less signal to noise ratio?

638

what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

3180

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