Physical Chemistry Interview Questions
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The rate constant for the second order reaction is 0.54/M.s at 300oC. How long (in sec) would it take for the concentration of NO2 to decrease from 0.62M to 0.28 M? 2NO2(g) 2 NO(g) + O2(g)

1195

4 Identify the substance oxidized, reduced, oxidizing agent and reducing agent for the following reactions

MahaGenco,

1078

. Given that 2Hg2+ (aq) + 2 e- Hg22+(aq) E0 =0.92V Hg22+ (aq) + 2 e- 2Hg(l) E0 =0.85V Calculate standard free energy change and K for the following process at 25oC Hg22+(aq) Hg2+ (aq) + Hg(l)

4078




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

1538

Balance the following redox equations by ion electron method. In basic medium (i) CN- + MnO4- CNO- + MnO2 In Acidic medium (ii) ClO3- + Cl- Cl2 + ClO2

Wipro, Chemical,

1 6804

what is induction on electrical insulators

955

what is little silver

2 3069

How can be set a responds factor for evaluating a unknown impurity by HPLC

Orchid,

1166




why silica absorb in mix bed resins in D M plant.

NTPC,

7 12095

how many types of stability in pharma or API industry ?

Unimarck Pharma,

2 8460

what kind of question can be asked in interview for polarimeter related ?

Ami Organics,

3785

what kind of question can be asked in interview for UV- VISIBLE & give me answer ?

2469

if water is mixed with mercury what causes with thier suspension property is it increses,decrease or average?

1426

name any insolvent compound?

1 3000

what does 50 denote in dowex 50 ????

1246


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Un-Answered Questions { Physical Chemistry }

Normally entropy is expressed as q/T. But, work and heat have same unit. Why can't it be replaced by work?

981


What is the brigg's raucher reaction?

960


what does 50 denote in dowex 50 ????

1246


The use of vermilion on rubric of the Tartar Relation is confirmed by the presence of three lines attributed to HgS. Why should this diatomic have more than one vibrational line?

1359


. Given that 2Hg2+ (aq) + 2 e- Hg22+(aq) E0 =0.92V Hg22+ (aq) + 2 e- 2Hg(l) E0 =0.85V Calculate standard free energy change and K for the following process at 25oC Hg22+(aq) Hg2+ (aq) + Hg(l)

4078






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

1538


During Soundness testing of Cement by Lechatelier method the Cement mould expands about 20 mm when merged in curing water for 24 hours after mould preparation.In that Cement MgO content is about 3.0%,SO3 is about 2.6% & Blaine is about 360 M2/Kg.Guess the reason & suggest solution.

1711


Find out how to make artifacts the maxwell boltzmann theory of gases . ps. I don't speak English that well

197


what is the difference between elctrefining and electrolysis?

902


What can be the supporter of combustion except oxygen.

1458


what are UV rays absorbs slightly?

883


The rate constant for the second order reaction is 0.54/M.s at 300oC. How long (in sec) would it take for the concentration of NO2 to decrease from 0.62M to 0.28 M? 2NO2(g) 2 NO(g) + O2(g)

1195


What is the requirement to give RFlow when using RID detector?

1669


In testing of Cement the formula for water requirement for setting time is as below- Water required for setting time = NC x 0.85 The question is that what is the logic of 0.85 in this formula??

1189


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?

4494