Determination of Viscosity Using Ostwald Viscometer With Observation and Calculation | विस्कोसिटी

This video is also available in ENGLISH. Determination of Viscosity using Ostwald Viscometer (With observation and Calculation) In English
• Determination of Visco...
Download "Solution Pharmacy" Mobile App to Get All Uploaded Notes, Model Question Papers, Answer Papers, Online Test and other GPAT Materials - play.google.co...
Determination of Viscosity by Ostwald Viscometer
The viscosity of liquid is a resistance to flow of a liquid. All liquids appear resistance to flow change from liquid to another, the water faster flow than glycerin, subsequently the viscosity of water less than glycerin at same temperature. Viscosity occurs as a result of contact liquid layers with each other. The viscosity is measuring by Ostwald viscometer. Relative Viscosity is the ratio of the absolute viscosity of the fluid on the viscosity of water at a certain temperature. Ostwald viscometer is a commonly used viscometer, which consists of a U-shaped glass tube held vertically. For more accurate measurements it is held in a controlled temperature bath. It is also known as a glass capillary viscometer. The result is typically expressed in centipoise (cP), which is the equivalent of 1 mPa s (millipascal second). In one arm of the U is a vertical section of precise narrow bore (the capillary). Above there is a bulb, with it is another bulb lower down on the other arm. In use, liquid is drawn into the upper bulb by suction, and then allowed to flow down through the capillary into the lower bulb. Two marks (one above and one below the upper bulb) indicate a known volume. The method of determining viscosity with this instrument consists of measuring the time for a known volume of the liquid (the volume contained between the marks A and B) to flow through the capillary under the influence of gravity. The time taken for the level of the liquid to pass between these marks is proportional to the kinematic viscosity. The time required for the test liquid to flow through a capillary of a known diameter of a certain factor between two marked points is measured.
The instrument must first be calibrated with materials of known viscosity such as pure (deionized) water. Knowing the value of viscosity of one liquid, one can calculate the viscosity of other liquid.
η1 = ρ1t1/ρ2t2 ×η2
where η1 and η2 are viscosity coefficients of the liquid and water, and ρ1 and ρ2 are the densities of liquid and water, respectively.
Chemicals and materials:
1. Distilled water
2. Beaker
3. Ostwald viscometer
4. Pipette
5. Weighing machine
6. Stop watch
7. Sample liquid
Procedure:
1. Clean the viscometer by the water and ethanol and dry it in oven for 10-15 min at 50o C.
2. Fill the bulb 1 completely with fixed amount of water with the help of pipette.
3. Through the rubber tube, water is sucked to the level above the upper mark A.
4. Then water is allowed to flow down. When water meniscus reaches the mark A, the stopwatch is started.
5. When the meniscus reaches the mark B, the stopwatch is stopped.
6. This time to flow the liquid from mark A to mark B is recorded for water. Averages of three determinations were taken to measure the accurate value. The time of flow of sample liquid represents t1.
7. Similarly the above procedure is repeated with the liquid sample. Averages of three determinations were taken to measure the accurate value. The time of flow of sample liquid represents t2.
8. The densities of water and sample liquid are determined by using specific gravity bottle.
9. The viscosity of sample liquid is determined by substituting the value in the equation given.
Get in touch with the solution by just clicking following links-
Facebook Group- / solutionpharamcy
Facebook Page- / pharmavideo
New channel (Pharmacy Dictionary) - / @pharmacydictionary
Instagram- / solutionpharmacy
E-Mail for official and other work - [e-mail]
LinkedIn- / pushpendrakpatel
#solutionpharmacy #Pharmacologyclass #GPATonlinetest #Pharmacypracticals

[@vickygupta3922]

*After 1hr is my practical exam, thanks ma'am.*

[@ssbmemes2492]

Same

[@chaitanya7814]

Me too

[@anmolsharma9143]

Hey can you tell me what actually happens in practical so that I would be much better prepared

[@sjas1372]

Same.....

[@universe2236]

Same! mine is tomorrow

[@learnwithsahil6549]

You've explained it in details that others don't. Thank you so much mam. Tomorrow is my practical exam in college. This is very helpful for me. Keep it up so that we can get your help in future more and more.

[@solutionpharmacy]

Sahil Laskar Reply from team- Thank you so much for your feedback sir.

[@Meghanegi]

Same yll

[@bishalnath6179]

me too.

[@anuj8855]

Today is my practical exam, and revisioning from this video is very helpful 👍👍

[@Totalscience569]

Thank you so much mam. Tomorrow is my oral practical test after see your video and listening this lecture m able to perform the practical in my first lab of physical chemistry.... Thx, and god bless you mam... 👍👌👌

[@solutionpharmacy]

(Reply by admin not by madam) Thank you. All the best.

[@theweirdclub3945]

Thank you so much ma'am .This video helped me to understand my chemistry experiment in college

[@ArpitKumar_5446]

Very clear expalanation 😊 100% understood Thanks mam

[@033_rajatsingh2]

after 30minutes my practical viva thnku maaam

[@aasthasachdeva648]

To pardhle naa fir😂😂

[@shwetajainhehe]

Pdhai pr dhyan do viva shiva do.. KZbin video dekhre hai 😂😂

[@033_rajatsingh2]

@@shwetajainhehe 😂😂😂😂

[@033_rajatsingh2]

@@aasthasachdeva648 🐼😂

[@aasthasachdeva648]

@@shanayakhan8779 charas ganja terko pyaara🌚🌚

[@sonikanarain708]

Thanku so much tomorrow is my practical and this video is so helpful for me

[@solutionpharmacy]

Sonika Narain my pleasure. All the best

[@PAWAN_CHOUHAN21]

Right

[@mryaduvanshi7809]

Mera v

[@abhishektamrakar4599]

yr r u crazy ak din phle kon dekhta hai pracital or ak bat btao aap ko method to pta hoga....shyad.. but kya aap ko lgta hai aap sahi sahi observation le pai kaise gya exam actually.... aata kuch bhi nhi ho to bhi to clgs mai pass kr dete hai yrrrr..... yr is video mai observation to btae he nhi plz plz reply aap ko kya help mere exam mai..... ak mughy doubt hai ki mera reading glt hai.....🙄🙄🙄

[@kanviaery2542]

@@abhishektamrakar4599 everything is given in table , what else observation u want??

[@ibtihalnoor1058]

Thanku so much My prof. just explain all the practical on board Thanks to this video i understood this practical

[@solutionpharmacy]

Thank you

[@swatikumari6158]

Thanks ma'am your explanation was really good. Please discuss theory and probable viva question as well

[@varunsharma6033]

thanks mam ....this video is really helpfull for me.....and your explanation style is too good....

[@shashankkumar4753]

Thank you so much mam. You have explained in a very easy manner

[@Vishwas_Mehta]

❤ very good explanation

[@yashinhalder8414]

Ma'am you just saved my btech first sem lab exam

[@MrGAMER-mo6yq]

Thank you so much mam 💗💗😊.. I don't think aapse aacha koi aur explain krta is practical ko 😊☺️

[@laibasaeedtoor9170]

Thank you so much mam for such a wonderful 👍 explanation

[@alilodhi00428]

Bht payaray andaaz me smjhaya apnay thnk u so much I cleared my problem

[@quratqureshi520]

I like your videos very much..🤩💗💝🌹💐..Please continue...to make practical videos..Thank you 💖

[@harshalahire1613]

This video make my internal paper better thanku for this here elaborated experiment in vary simple way

[@gurdevsingh7209]

Thanks, this is really very easy for understanding.

[@omvideotradegy123]

Thanks alot and love you Ma'am 😘💖

[@pythonbuilders3937]

Please keep on making these type of videos so as to inspire students

[@fkkhanfkkhan1245]

Thank you so very much ❤️ may Allah will bless you with everything 💓

[@subhamkumarsingh2274]

Well explained.👍 Thank you so much.

[@AZ-rt5gv]

Thankyou mam m you explain very easily tomorrow mai practical exam your video is very helpful for me and other students thankyou 🙏🙏🙏🌹🌹🙏

[@anmoltechnicalgaming]

Thanks mam after 2 days my practical is in college and you are last hope for me to pass exam

[@solutionpharmacy]

All the best

[@anokhimishra5775]

Aapki voice bhut clear h

[@sewantakishurbordoloi]

Tomorrow , mera exam hain. Thank you, Madam.😊

[@ntpchannel3690]

Mai bahot lucky hnu Jo mai Iss 21st century me paida hua Kyu ki mai practical ke liye KZbin use kar paa raha hnu. Thank You my God ❤️❤️❤️❤️❤️❤️

[@ashishjanawad9464]

Medam You are ultimate plz 🙏 Upload all experiment of 1st semester BE

[@PratimaPhagami-qb9zm]

It’s my practical after 3 hours. It’s really helpful🥰❤️

[@shaguftharuksar8470]

Thank you so much tomorrow is my practical exam, it is very helpful.

[@solutionpharmacy]

Most welcome

[@chandrakantgholap2514]

Such a beautiful explanation.nice

[@vijaymadivalar1013]

Thnks a lot im also confused in this experiment it's vry helpfull

[@shahdeenhaq]

Thankyou Ma'am

[@AmanKumar-jp5ys]

thankyou so much ma,am for this wonderfull explaination

[@anuragbhadle9697]

Thanks my practical exam is after 5 mins✌

[@_70_pujakumari42]

Thank you for your efforts ❤️🔥

[@ziaullahkhan6811]

thank you mam so much this licture was very helpfull

[@sayanibhattacharjee2602]

Thanku mam ❤️ very helpful and clean video

[@firojaktar4759]

Very Helpful

[@niharikasaini4282]

Thanku so much Explained so easily👏

[@solutionpharmacy]

Keep watching

[@riturajborah6709]

Thank u so much for all your efforts....it really means to us !!!!💌

[@solutionpharmacy]

Thanks a lot for positive feedback

[@pavanmeena3359]

thank you mam this is very helpful for us.

[@purabeebaral5892]

Nice explanation ❤

[@sanjeevsahani3724]

Nice video mam. It's really helpful for me. Thanks..

[@chaithrachaithu3119]

Tq somuch madam... I understand everything very clearly

[@solutionpharmacy]

Chaithra Chaithu Most welcome

[@abhishektamrakar4599]

yr is vedio mai to observation btaya hi nhi hai or mughy doubt hai ki aaj clg mai mera observation glt hai..... according to me it is not usefull....😅😅😅

[@SukhaSingh-ov9gq]

Good explanation ❤

[@venuyadav3470]

Thank you so much mam❤

[@AliJan-tp2rh]

And mine exam is after 15 mins😁😁😁 and Thank u so much Mam lecture was outstanding

[@wartikapoojavlogs8403]

Thank you so much mam it's really helpful

[@112narendrasingh2]

thanku so much dii

[@ChahatSethi24]

Best explanation😊😊

[@grootgroot109]

Kal practical hai ab mai top krega

[@rohitpramodvishwakarma2414]

Thank you very much Maam

[@rdjaikumar1238]

Thank you So much

[@anchalrawat8519]

Thanku so much mam today is my practical this video is very helpful to me

[@solutionpharmacy]

All the best

[@swapnilzore8567]

Nice tutorial keep uploading the practical

[@solutionpharmacy]

Swapnil Zore Thank you

[@akashgorain8212]

Nice video for knowledge😌😌😌

[@TamannaAnsari-qd2os]

After 1 hr is my practical exam

[@NehaPathak-zq1rt]

Nice explanation mam thanku

[@crazfire3515]

Nice explaination mam😊

[@himanshurajput9212]

Bhai abb isse simple kya loge 🙏🙏🙏 Thanks samjhane k liye .

[@srividhyadevarakonda808]

It's so useful for us mam tqq

[@NazirAhmed-rf4bt]

Thanks

[@TSPTHUNDER]

please make a video on determination of dissolved oxygen and partition co-efficient.....................that will be very helpful.

[@komalchoudhary-kl1vk]

Thank you mam...🙏🙏

[@RahulKumar-cj4pp]

Very impressive explain thanks 🙏

[@ruksanaartworld]

Good job

[@hrithikchatterjee1773]

What is the instrument used for highly viscous liquid???

[@samirsheikh5456]

Thank u so much mam...☺️...tomorrow is my practical...😅😰

[@beetech2000]

After 5 min we have viva ..thx ma'am

[@babita7001]

Thank you 🙏

[@SaloniTiwari-wq6hs]

Thanks a lot ❤

[@sheetalsingh4898]

Super nd helpful vdo thnks mam😊

[@mayankdwivedi1893]

So beautifully explained . Thanks a lot . It really helps😊

[@solutionpharmacy]

Thank you

[@ankitdoyda5780]

Thanks ✌️✌️✌️... It's very helpful...🤗

[@resminaparbin9929]

Thank you so much ma'am

[@shivangisharma8009]

U really explained very well

[@solutionpharmacy]

Thank you

[@abhishektamrakar4599]

yr is vedio mai to observation btaya hi nhi hai or mughy doubt hai ki aaj clg mai mera observation glt hai..... according to me it is not usefull....😅😅😅

[@solutionpharmacy]

Aap pura vidoe dhyan se dekhiye

[@abhishektamrakar4599]

@@solutionpharmacy okay!!! actually mam mughy plz btao mera conclution 2.96×10^-3 aara hai or aap ka 7.47×10^-3 aara hai... kya mera bhi sahi hai result? & last of all tq for your reply aap ki aawas bhhout methi hai😊

[@solutionpharmacy]

abhishek tamrakar All replies in solution pharmacy channel are made by admin means, Sir. She doesnt reply. Anyway hope you will focus on her lecture rather then her voice because such things will not help you out.

[@srinagghantasala345]

Thank you❤❤❤ mam

[@kshitizarungupta8460]

Mam thanks for the video. Salute u mam

[@googlemy3573]

After 1 day of exam ..tq mam

[@maltibhokare5814]

Very nice explanation mam 👍👍😊

[@akritisharma5878]

Thank you ❤❤❤❤🌹🌹🙏🙏🙏

[@sofinursb3182]

Awesome video

[@slayerdevil2962]

Thank u mam

[@inventionforsolutionifs5643]

Very good explanation 🙂 Thanks mam.

[@priyachaudhary9425]

Very well explained ..thnq

[@solutionpharmacy]

Most welcome

[@abhishektamrakar4599]

yr is vedio mai to observation btaya hi nhi hai or mughy doubt hai ki aaj clg mai mera observation glt hai..... according to me it is not usefull....😅😅😅

[@bosusabbe4002]

After noon session I have exam thank you mam😊

[@sfgaming3641]

Thank u mam college me kuch smjhate hi ni h shi se

[@aashuchoudhary6752]

Great mam

[@debojitdeori4837]

Chem practical tomorrow lol

[@Ruhi_Bisht_09]

LoL 😂

[@PahadiNoniPIYA]

Very helpful video. 😊

[@solutionpharmacy]

Thank you

[@abhishektamrakar4599]

yr is vedio mai to observation btaya hi nhi hai or mughy doubt hai ki aaj clg mai mera observation glt hai..... according to me it is not usefull....😅😅😅

[@anuragthakur0724]

Thanks a lot. 🙌

[@Navi-cn5tj]

Very nice

[@solutionpharmacy]

Thank you

[@narendrajambhulkar633]

Thank you mam your explanation

[@Harshitmishrs12]

Vry nyc explained

[@retailtrader2611]

Bohot badhiya

[@TrueIndian3971]

You know this my practical exam and i am watching your video😂😂😂 thanks 🙏 mam

[@babbidoda5063]

Well explained 👏

[@solutionpharmacy]

Thank you 🙂