This Weeks MOTW : kabhi (Abhi) - Page 2

Originally posted by: soni28

hello abhi!

i really don't know anyone here and i think it's high time i did so i'll start with u!
congratz on being MOTW...here's a few q's from me!
so what is abhi short for? Abhijit
what do u do? (study/work) Work, Accounts and Finance Manager
fav movie? Deewar, DDLJ, Yuva
fav scene(something which touched u)from a movie/serial? Anand, End of the movie
fav song? Kaisi hain yeh rut ki jisme (Dil Chahta Hain)
fav book? None for fictions, Any finance related book for studies
fav tv comedy? Great Indian Laughter challenge, Hum Paanch
fav singer both male n female? Current Sonu Nigam / Shreya Ghoshal/Asha Bhosale
fav MD? Currently ARR
fav dish? Puranpoli, Thalipith, Vada pav
fav singer in C2005? Vinit, Nihira, Himani and Hemu
fav jodi in EMAET? TV (Favourite amongst all jodies present
fav lil champ? Sanchita and only Sanchita
that's it from me 😊

Thanks😊

Originally posted by: manjujain

Congratulations Abhi!!! my question to you is how much important is virtual relationship for you in real life?

Akela chala jab ghar se main
Tanha raaston me dub gaya main
Der hui to mudkar dekh
Vapis aneka vaada kar gaya main

Andhakar me tanha rahen saath de rahi thi
Is tanha pan me yaadon ki roshni dikh rahi thi

Sun raha tha dil pitaji ki baat
Jindagi age hain din ata hain raat ke baad
Nayi manjile intezaar kar rahi hain
Isi asha me age jaane ki chah badh rahi hain

Achanak roshni ki kiran dikhayi di
Nayi yaadon ki raah dikhai di
Tanhapan ne jaise haath chod diya
Kyon ki IF SRGMP ne use tham liya

Dostonki bahaar jaise dastak dene lagi
Is ujde man me jindagi phukne lagi

I hope this poem that I made for Friendship day explains everything Manjudi😊

Originally posted by: SHUBHAMSG

OK Kabhi , please answer these for me :

1. What is PINACOLE - PINACOLON rearrangement ?

Pinacole Experiment

Objective:

Reduction of Pinacolone Using Sodium Borohydride. Then the rearrangement to 2-butene 2,3-dimethyl.

Procedure:

In a 250 ml round bottom two neck flask, we combined 25 ml pinacolone and 50 ml methanol. We then placed the mixture into an ice water bath and over the course of 20 minutes added in sodium borohydride, hydrogen gas is produced in the reaction so we had to make sure the temperature of the mixture stayed below 20 degrees Celsius.

Next we set up a reflux condenser and put a thermometer in the second neck of the flask. We heated the mixture until it reached 50 degrees for 25 minutes, then allowed to air cool. The mixture was then put into a separatory funnel that had 250 ml diethyl ether. The solution was then washed with 200 ml salt water and the aqueous layer removed for three times. Next anhydrous sodium sulfate was added, to remove all remaining water, and then removed by decanting.

A still is then set up, with a thermometer near the neck of the flask to measure the vapor temperature. The different components of the solution will boil at different temperatures, this is the property we used to separate them out. We heated the solution until its temperature reached 105 degrees this entailed having one container at the beginning of the experiment until the temperature suddenly jumped. This meant that the chemicals that boiled away early could just be discarded. When the temperature did jump we switched the collection flask, this was our product.

On this product we performed an IR spectrum analysis.

We then took out product, which was confirmed to be 2-Butene, 2,3-dimethyl, and added 15 ml of Sulfuric acid and 20 grams of ice to a round bottom flask. This turned the fluid yellow. Then we set up a still, and heated the solution until a vapor temperature of 80 degrees is reached. The product was supposed to be put into a separatory funnel but we had a very small product, so we just added anhydrous sodium sulfate and went to the vapor phase chromatography.

Observations:

We have the biggest peak at 2.154, with the second highest being at 1.84. We did have a lot of small peaks showing up between 2.154 and 4.724 as well as one at 1.535. In this way ours was different, but we can explain this as being a product of skipping the final separatory step and extra distilation. This would have left extra chemicals in our product that could have otherwise been removed, albeit in small quantities.

Conclusions:

The spectrum for 2-Butene, 2,3-dimethyl matches the control given to us. We have successfully turned pinacolone to 2-Butene, 3,3-dimethyl then to 2-Butene, 2,3-dimethyl.

Is this the one u wanted, Sorry I m not a science person...... this is googled😕 Will google others too

2. Reagent for ROSENMUND'S REACTION .

3. What is " MOTHER OF VINEGAR " ?

Mother of vinegar

Mother of vinegar is a slime composed of yeast and acetic acid bacteria that develops on fermenting alcoholic liquids, which turns alcohol into acetic acid with the help of oxygen from the air. It is added to wine, cider, or other alcoholic liquids to produce vinegar.

Mother of vinegar can also form in store-bought vinegar, if there is some non-fermented sugar and/or alcohol contained in the vinegar. While not appetizing in appearance, mother of vinegar is completely harmless and vinegar does not have to be discarded because of it. It can be filtered out using a coffee filter, or simply left in and ignored.

Again Googled, hope u got what u required😕

4. What are the uses of FORMALDEHYDE ?

III. Properties, Manufacture, and Uses of Formaldehyde The chemical "formaldehyde" is a colorless, pungent gas at room temperature with an approximate odor threshold of about 1 ppm [Ex. 73-120]. While the term "formaldehyde" is also used to describe various mixtures of formaldehyde, water, and alcohol, the term "formalin" more precisely describes aqueous solutions, particularly those containing 37 to 50 percent formaldehyde and 6 to 15 percent alcohol stabilizer. Most formaldehyde enters commerce as formalin. Alcoholic solutions of formaldehyde are available for processes that require low water content [Ex. 73-53]. Paraformaldehyde, a solid, also serves as a source of formaldehyde gas. Formaldehyde gas per se is not available commercially. The Chemical Abstracts Service (CAS) has assigned the number "50-00-0" to formaldehyde. This number applies to both formaldehyde gas and its aqueous or alcohol stabilized solutions. Formaldehyde is a major industrial chemical, ranked 24th in production volume in the United States [Ex. 138-F]. In 1985, 5.7 billion pounds of 37 percent formaldehyde (by weight) was produced. Formaldehyde has four basic uses: as an intermediate in the production of resins; as an intermediate in the production of industrial chemicals; as a bactericide or fungicide; and as a component in the formulation of end-use consumer items. The manufacture of three types of resins: urea-formaldehyde, phenol-formaldehyde, and melamine formaldehyde, accounts for about 59 percent of total consumption [Exs. 70-2; 73-52]. An additional seven percent is consumed in the production of thermoplastic acetal resins [Ex. 8]. About one-third is used in the synthesis of high volume chemical derivatives, including pentaerythritol, hexamethylenetetramine, and butanediol [Ex. 8]. Two percent is used in textile treating and small amounts of formaldehyde are present as preservatives or bactericides in consumer and industrial products, such as cosmetics, shampoos and glues. Some products prepared from formaldehyde contain unreacted formaldehyde residues which may be released from the product over its useful life. One example is urea-formaldehyde resin. Urea-formaldehyde resin is a generic name that actually represents an entire class of related formulations. Over 60 percent of urea-formaldehyde resin production in 1977 was consumed by particleboard and plywood manufacturing, where the resin is used as a glue. Urea-formaldehyde resins are also used in decorative laminates, textiles, paper, and foundry sand molds [Ex. 73-53]. Formaldehyde resins are used to treat textiles to impart wrinkle-resistance to clothing. About 60-85 percent of all apparel fabric is finished with formaldehyde-containing resins. As apparel manufacture is the sixth largest industry sector in the United States [Exs. 70-2; 70-14], this use is the major source of widespread exposure to formaldehyde because of the large number of workers potentially exposed. Formaldehyde destroys bacteria, fungi, molds, and yeast. Its commercial importance as a fungicide is probably its greatest use as a disinfectant [Ex. 70-2]. Because of its bactericidal properties, formaldehyde is used in numerous cosmetic preparations.

Formaldehyde's uses can lead to widespread exposure in downstream industries. For example, when formaldehyde is present in disinfectants, preservatives, and embalming fluid, worker exposure can occur. Although formaldehyde changes into other chemicals when urea-formaldehyde resins and concentrates are produced, decay may occur, causing workers in numerous industries including wood products and apparel manufacture to be exposed to airborne formaldehyde when it offgasses from products manufactured with these resins.

This one googled too..... hope u got what u wanted

Sorry Shubham being a commerce guy I dont know about all this things...... I could not get the answer for the second question...... but will surely check if someone can help me here😕