Chemical Engineer's Adda

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"पोलारिस: ज्ञान का उत्तर तारा" – सफलता और आत्म-विकास की कुंजी

क्या आप आत्म-अनुशासन, नेतृत्व, आध्यात्मिक विकास, अच्छे रिश्ते और वित्तीय स्वतंत्रता एक ही जगह पाना चाहते हैं? "पोलारिस: ज्ञान का उत्तर तारा" वही मार्गदर्शक है जो आपकी ज़िंदगी को पूरी तरह बदल सकता है।

यह किताब साधारण आत्म-विकास पुस्तकों से अलग है। इसमें हजारों साल पुरानी ज्ञान परंपराओं को आज के व्यावहारिक तरीकों के साथ जोड़ा गया है, ताकि आप कठिन चीज़ों को आसानी से समझ सकें और अपनी ज़िंदगी में लागू कर सकें।

"पोलारिस" की खासियत क्या है?
इसमें जीवन के पाँच महत्वपूर्ण स्तंभों को समझाया गया है—

वित्तीय स्वतंत्रता: संपत्ति और समृद्धि के अनसुने रहस्य जानें।
सामाजिक आचरण और नैतिकता: मजबूत नैतिकता के साथ गहरे रिश्ते बनाएं।
ईमानदारी और आत्म-अनुशासन: भीतर से मजबूत और आत्म-नियंत्रित बनें।
उद्देश्य और नेतृत्व: प्रभावी नेतृत्व से दुनिया में बदलाव लाएं।
आंतरिक शांति और आध्यात्मिक विकास: स्पष्टता, चरित्र और संतोष प्राप्त करें।
इसमें क्या मिलेगा?
असल ज़िंदगी के उदाहरण जो आपको हर परिस्थिति में मदद करेंगे।
सफलता के सुनहरे नियम जो आपकी सोच और धन को बढ़ाएंगे।
व्यापक मार्गदर्शिका जो आपको सही दिशा दिखाएगी।
जिस तरह उत्तर तारा (ध्रुव तारा) यात्रियों को सही राह दिखाता है, उसी तरह "पोलारिस" आपको सफलता, आत्म-विकास और उद्देश्यपूर्ण जीवन की ओर ले जाएगा।

अगर आप अपनी ज़िंदगी में सकारात्मक बदलाव लाना चाहते हैं, तो सफर आज ही शुरू करें!

पोलारिस: ज्ञान का ध्रुव तारा: सामाजिक, आध्यात्मिक, आर्थिक और नैतिक सफलता के लिए आपका सच्चा मार्ग Some promotions may be combined; others are not eligible to be combined with other offers. For details, please see the Terms & Conditions associated with these promotions.

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UPSC Indian Forest Service (Main) Examination, 2022
Subject: Chemical Engineering

Q7. a) Advantages of supercritical fluid extraction (SFE). Why is CO2 frequently a desirable solvent for SFE?

Supercritical fluid extraction (SFE) is a technique that uses a supercritical fluid as a solvent to extract compounds from a solid or liquid sample. One of the main advantages of SFE is that it can be used to extract a wide range of compounds with high efficiency and selectivity, and it is considered a green technology as it does not use any toxic solvents.

Carbon dioxide (CO2) is frequently used as a solvent in SFE because it has several desirable properties that make it well-suited for this purpose. These include:

Non-toxicity: CO2 is a non-toxic and non-flammable solvent, making it safe to use and handle.

Low critical temperature and pressure: CO2 has a low critical temperature and pressure, meaning that it can be easily converted into a supercritical fluid by heating and pressurizing it.

High solvating power: CO2 has a high solvating power for certain compounds, making it an effective solvent for extracting a wide range of compounds.

Selectivity: CO2 is a highly selective solvent, meaning that it can be used to selectively extract certain compounds from a sample while leaving others behind.

Environmentally friendly: CO2 is a naturally occurring gas and can be recycled and reused after extraction.

In summary, SFE is a highly efficient and selective method for extracting a wide range of compounds, CO2 is frequently a desirable solvent in SFE due to its low critical temperature, high solvating power, selectivity, environmentally friendly, and non-toxicity.

na ham-safar na kisī ham-nashīñ se niklegā

hamāre paañv kā kāñTā hamīñ se niklegā

guzishta saal ke zaḳhmo hare-bhare rahnā

julūs ab ke baras bhī yahīñ se niklegā
~Rahat Indori

न हम-सफ़र न किसी हम-नशीं से निकलेगा

हमारे पाँव का काँटा हमीं से निकलेगा

गुज़िश्ता साल के ज़ख़्मो हरे-भरे रहना

जुलूस अब के बरस भी यहीं से निकलेगा
~राहत इंदौरी

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First flower of this season.
Pink rain Lilly 🌷 in my garden.

Out in the garden for all to see.
Is the bloom of the Spring Lily.
Catching the rays of the sun.
Anticipating summer and all its fun.

Beautiful is this lily with a radiant glow.
As water from the birdbath flows.
Sweet scent blowing in the wind.
One of the sweetest flowers that nature sends.
~By Lamar Cole

Broken Winged Brid.
Tanka #4

"I knew from the start,
one day, I must set it free.
But died in my palm...

After tweeting for three days,
That tiny broken winged bird."

About tanka:
The tanka is a thirty-one-syllable poem, traditionally written in a single unbroken line. A form of waka, Japanese song or verse, tanka translates as "short song," and is better known in its five-line, 5/7/5/7/7 syllable count form.



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Wisdom quotes of Bharat Ratna Maulana Abul Qalaam Azaad

Maulana Abul Kalam Azad, who was the first education minister of independent India and was well versed in languages such as Arabic, Hindi, English, Urdu, Persian, and Bengali.

Popularly known as Maulana Azad, he is remembered for being a noted scholar, poet, and revolutionary journalist and also for his invaluable contributions to the Indian freedom struggle. Maulana Azad played a major role in strengthening the education sector of India.

He improved the literacy rate of India by making the education system of India strong post-independence when the entire nation was suffering from widespread illiteracy. He put emphasis on higher education and vocational training for all the citizens of the country.

Maulana Azad was also played a major role in the establishment of the University Grants Commission (UGC), which is the regulatory body for all higher education institutes in India. He was also responsible for establishing the first Indian Institute of Technology (IIT) in the country.