Skip to main content

Important Questions of Engineering Chemistry | First Year Questions | UEC Journalism Society

Practice Questions

  • Explain various internal treatments of boiler feed water.
  • Explain alkalinity and its types,
  • Explain the calorific value and its types.
  • 20ml of a standard water require 8 ml EDTA. 20 ml of a water sample require 6 ml of the same EDTA before boiling and 4ml of the same EDTA after boiling. Calculate the total permanent and temporary hardness present in the water sample (Standard hard water = 1.2 mg/ml CaCO₂)
  • Explain the following boiler troubles and their remedies: (1) Boiler corrosion  (ii) Priming and foaming .
  • Explain the following: (1) Classification of fuels with suitable examples. (ii) Significance of determination of moisture, volatile matter, ash and fixed carbon in coal.
  • Calculate the weight of dry products obtained from the combustion of 1 Kg coal possessing the following: C-80%; H-10%; S-5%; N-2%; Ash-rest.
  • Explain the following: (1) Octane number (ii) Catalytic cracking .
  • Explain the mechanism of extreme pressure lubrication .
  • Describe the classification of polymers.
  • Differentiate between thermoplastic and thermosetting plastic with suitable examples.
  • Write a short note on natural and vulcanized rubber.
  • How the following polymers are prepared? Mention their important properties and uses also. (1) PVC (ii) Nylon 6
  • How the following properties of lubricant are determined? Give their significance also. (1) Aniline point (ii) Cloud and pour point
  • What are lubricants? Discuss briefly various types of lubricating oils.
  • Why an oil should possess high viscosity index and low SEN?
  • Describe manufacture of Portland cement by wet process with chemistry of rotary kiln .
  • Explain Beer-Lambert's law and its applications.
  • Write a short note on Gas Chromatography.
  • Give the classification of refractory. What are the characteristics of a good refractory? What is refractoriness?
  • Write short note on silicon resin.
  • Give the principle of applications of IR spectroscopy.
  • What is plaster of Paris ? Where it is used?
  • How refractoriness of refractory material can be determined by pyrometric cone G equivalent ?
  • Name different types of molecular spectroscopy. In which region of electromagnetic C spectrum are they obtained. (b) Classify refractories, giving one example of each class. (c) Give setting and hardening reactions of cement.
  • Discuss with examples the types of polymerization.
  • Write a note on epoxy resin.
  • What are plastics? Give examples.
  • Write preparation, properties and uses of Savan and PMMA.
  • What is vulcanization ? Explain why natural rubber needs vulcanization.
  • Explain scale formation and its disadvantage in boiler. Why is calgon conditionings better than phosphate conditioning?
  • Write down chemical reactions for calculation of lime and soda requirement for softening of hard water.
  • What is disinfection of water? How it is carried out? Explain break point chlorination.
  • Explain hardness of water. How it is determine by complexometric titration method?
  • Describe the determination of flash and fire points by penskey Marten's method. What are their significance in lubrication?
  • Distinguish between (i) thermoplastic and thermosetting plastic (ii) Addition, Condensation and co-polymerization (iii) Buna-S and Buna-N.
  • Discuss in brief the boiler corrosion. How it is controlled?
  • What is natural rubber? What are its drawbacks? Discuss vulcanization process and its advantages.
  • What is Kocking of fuel? Explain octane number and Cetane Number along with their significance.
  • Write down the synthesis of nylon-6 and nylon 6:6 from hydrocarbon.
  • What are constituent of cement? Discuss the mechanism of setting and hardening of Portland cement with chemical reaction involve in it. 
  • What are refractories? How are they classified? Give three characteristic of good refractory material. 
  • Write down preparation properties and uses of following. (i) Bakelite (ii) urea formaldehyde (iii) Dacron.
  • What are different types of fuels? What are characteristic of a good fuel?
  • Discuss various mechanism of lubrication.
* Questions will be updated . Check regularly .
* Repeated questions are the most important .


Comments

Post a Comment

Popular posts from this blog

Life of Engineering Student

 So we all only heard from our childhood...that carrier means-  Doctor and Engineering ..... but that time we hadn't imagine that how the path follows for it...... So divided in subjects after 10th and then in 12th on just basis of three subjects yes our JEE Marks.... So finally started journey to my Engineering........ Engineering, a world of dreams..where innovation's the art, But it's laced with challenges, right from the start... In this poetic journey, we'll uncover the strife, And unveil the solutions for engineering life..... Engineering, a canvas where dreams take their flight✈️ Challenges and victories, in equal might. With resilience, teamwork, and knowledge's embrace, We'll engineer a future, where no challenge we'll face. Talking about college campus.... Life on the college campus, a blend so divine, Where dreams and reality intertwine. With each passing day, we grow and learn, On the college campus, the world's our concern... With projects a
4 comments
Read more

Future Technology Needs for India - 2047 | Article on Azaadi ka Amrit Mahotsav in Hindi

 Azaadi ka Amrit Mahotsav " The only way you survive is you continuously transform into something else " : Ginny Rometty Written by Anuj Singh Tomar , 8th sem , EE ' परिवर्त्तन ' मृत्यु से भी बड़ा सत्य है ।  दो लाख से अधिक वर्षों के मानव इतिहास ने हर सदी में परिवर्तन के सत्य को जाना है । हर बदलाव का लक्ष्य मानव जीवन को सुगमता प्रदान करना होता है । पहले सिंचाई के लिए नहर व बरसात पर निर्भर रहने वाला किसान आज नई नई टेक्नोलॉजी का उपयोग कर खेतों की सिंचाई करता है । अपने पड़ोस की मंडी में कौड़ियों के भाव में फसल बेचने को विवश किसान आज भारत के किसी भी हिस्से में अपनी फसल को उचित दाम पर बेच सकता है । ऐसे ही सैकड़ों जीवंत उदाहरण टेक्नोलॉजी की जरूरत  को महिमामंडित करते हैं। आजाद भारत की जरूरत रोटी , कपड़ा और मकान थी पर आधुनिक भारत की जरूरत शिक्षा , रोजगार व स्वास्थ्य है  । आधुनिक भारत के सपने को साकार करने के लिए हर व्यक्ति का शिक्षित होना आवश्यक है । शिक्षा रोजगार का स्त्रोत है , शिक्षा इनोवेशन का स्त्रोत है , शिक्षा दीनता - हीनता को खत्म करने का रामबाण है । आधुनिक भारत को श
Post a Comment
Read more

First Day of College

 तो  तारीख थी 25 अक्टूबर  2021, मैने अपनी गाड़ी पार्किंग मे लगायी दद्दु के कहने के हिसाब से क्युकि उस समय मैं गाड़ी चलाना अच्छे से नहीं जानता था। फिर मैने अपने एक स्कूल के दोस्त को फोन लगाया बस ये निश्चित करने के लिए की वो आ रहा कॉलेज या नहीं। असल मे मुझे पता था की वो नहीं आने वाला है पर क्युकि मुझे कॉलेज मे व्यस्त दिखना था इसलिए मैं एक्टिंग कर रहा था। पर फिर मैने अपने स्कूल के दूसरे  मित्र को फोन किया जिसका जवाब ये आया की वो उसके अन्य दोस्तों के साथ आ रहा है और अभी रास्ते मे है। दरसल हम तीनो स्कूल के दोस्तों का एडमिशन एक ही कॉलेज मे हुआ था, या कह सकते है की एडमिशन होने के बाद दोस्त बन गए थे। कहते है ना की पराई जगह पर सबसे कम पराया भी अपना लगने लगता है।  मैं कुछ समय के लिए कॉलेज की लायब्रेरी के सामने खड़ा हो गया। दस मिनट बीते और मेरा दोस्त कुछ अपने दोस्तो के साथ आता है। हम एक दूसरे से मिलते है और कुछ बातें करते है। मुझे सारी बातें तो याद नहीं है पर जो याद है वो एक लड़की के बारे मे थी। उस दिन एक लड़की भी कॉलेज आने वाली थी जिसकी स्कूटी सफेद रंग की होने वाले थी। उनके हिसाब से वह लड़की बहु
3 comments
Read more