15 For Teen Applied Chemistry Most Repeated Questions PDF

Applied Chemistry Most Repeated Questions Complete Playlist INSTAGRAM YOUTUBE WHATSAPP WEBSITE LinkedIn MOST REPEATED QUESTIONS Unit 1 Define the terms cetane number and octane number.(2.5) OR Explain cetane number and octane number by chemical structure.(...

Applied Chemistry Most Repeated Questions Complete Playlist INSTAGRAM YOUTUBE WHATSAPP WEBSITE LinkedIn MOST REPEATED QUESTIONS Unit 1 Define the terms cetane number and octane number.(2.5) OR Explain cetane number and octane number by chemical structure.(3) Distinguish between producer gas and water gas.(2.5) Q.2. (a) Differentiate between Proximate and Ultimate analysis of coal. How is coke manufactured by Otto- Hoffmann Oven?(6.5) A sample of coal was found to contain the following:C= 81%, H = 4%, O = 2%, N = 1.0% the remaining being ash. Estimate the quantity of minimum air required for complete combustion of 1 kg of the sample. find the composition of dry flue gas by volume, if 40% excess air is required.(6) Describe the bomb's calorimeter used for the determination of calorific value of fuels. Also, outline the principles chief involved in refining of petroleum and name of components separated?(6.5) OR Explain how the calorific value of a fuel can be determined by BOMB calorimeter with the help of a neat diagram.(6.5) Calculate the HCV (in kJ/kg) of 0.75 g of a fuel containing 85% of carbon, when burnt in a bomb calorimeter, increased the temperature of water from 27.5 to 29.3C. The calorimeter contains 250 g of water and its water equivalent is 150 g.(6)  Define the terms thermal cracking and anti knocking agents. Explain what is ultimate analysis of coal? How one can fine the Composition of C, H, N & S using it? How the calorfic value of a fuel can be determined by Boy's gas calorimeter? Explain with the help of a neat diagram. OR Explain the determination of calorific value by Boy's calorimeter. 2.16 g of coal was kjeldalized and NH3 gas thus evolve was absorbed in 25 ml of O.INH2S04.After absorption, the excess acid required 12.5 ml of 0.1N NaOH for exact neutralization. Determine the percentage of N in sample Of coal. What is synthetic petrol?(2.5) Define HCV and GCV. Fixed and Fluidized bed catalytic cracking. What is sweetening of petrol? from the Calcuate GCV and NCV Of a gaseous fuel following data obtained from calorimeter experiment. Volume of gaseous fuel burnt at STP 0.08m3 Temperature of inlet water = 260C Temperature of Outlet water = 320C Weight of water produced by steam condensation = 0.01 kg. Late heat of steam = 587 Kcal/kg (6) Unit 2  State Gibb's phase rule. OR Derive Gibb's phase Rule. Draw and explain the phase diagram of water system. What is Pattinson's process for desilverisation of lead? Draw its phase diagram also.(6.5) Draw the phase diagram of C02 system and explain how it is different from water system.(6) Draw the phase diagram of water system and explain the importance of a triple point. Draw and explain the phase diagram of Pb-Ag system. What is Pattinson's Process? Find out the number of phases, component and degree of freedom in the following: (1)NH3(g) at 420C (2) Crystal of Cu SO,. 5H20 (3) An aqueous solution of glucose. Define the terms Phase, Component and Degree Of Freedom. Write condensed Phase rule and explain why is it used for two component systems. Discuss the applications of Eutectic mixtures. (atleast 3).(3)  Define order and molecularity of a reaction with suitable example. What is an eutectic mixture?(2.5) Explain what is happening at the triple point of water. How many phases are there in the system at this point?(2.5) What are cooling curves?(2.5) Unit 3 Briefly explain the temporary and permanent hardness of water. Explain the EDTA method to estimate the total hardness of water.(6) OR Explain how the hardness of water is removed by EDTA method. OR Write principle of EDTA method of determination of hardness of water. OR Describe the principle and theory of EDTA method of determination of hardness of water.(6.5) Explain the carbonate and phosphate conditioning methods for water softening.(3.5) OR Explain the following:- (1)carbonate and Phosphate conditioning. (2)Lime soda process (6) A sample of ground water has 150 mg/l of Ca2+ and 60 mg/L of mg2+.Find the total hardness expressed in milliequivalents per litre and mg/L in terms of CaCOg.(3)  What reverseis the osmosis. principle Name of the membranes employe din it. Also, state the advantages of this process.(4) A 50 ml of a sample of hard water consumes 32.5 ml of 0.01 M EDTA. What will be the hardness of water.(2.5) Define the following: (i) Calgon conditioning, (ii) Priming and Explain the following terms: (i) Reverse Osmosis (ii) Electro dialysis (iii) Priming & foaming. foaming, (iii) Electrodialysis.(6) OR 100 ml of H20 sample when titrated against N/50 H2S04. Using phenophthalein as an indicator, gave the end point with 10 ml of acid. Another 100 ml of the sample also required 10 ml of the acid to obtain methyl orange end point. What type of alkalinity is present in the sample and what is its magnitude? 50 mo of a sample of hard water was titrated against 0.01 EDTA if required 15 ml of EDTA for titration. 50 ml of the same hard water after boiling and filtering etc. required 5 ml of EDTA for titration. Calculate the total hardness of water. What is caustic embrittlement? Explain its causes and prevention. What are the methods of water softening of by external treatment. What are ion-exchange resins? How are they used for softening of water, explain with reactions and diagram? How can they be regenerated after getting exhausted?(7)  Calculate the lime (84% pure) and soda (92% pure) required for treatment of 50000 liters of water contaning Ca(HC03) = 40.5 ppm, Mg(HC03) =36.5 ppm, MgS04 = 30.0 ppm, CaS04 = 34 ppm, CaC12 = 27.75 ppm and NaCl = 10.0 ppm.(8) If 50 ml of sample of hard water consumed 15mI of 0.01M. What is the hardness of water?(5) I g Of CaC08 was dissolved in dil. HCl and solution dilute to 1 litre. 50 ml of this solution required 42 ml of EDTA solution while 50 ml of sample water required 15 ml of EDTA. On the other hand when 50 ml of boiled water sample titrated against EDTA, consumed 9 ml of solution. Calculate total permanent and temporary hardness of water in ppm.(6) Unit 4 What is Pilling-Bed Worth rule? OR What is pilling-Bedworth Rule? What are the conditions for dry and wet impure metal corrosion? Explain why under corrodes faster than pure metal Impure metals identical conditions? OR corrode faster than pure metal under identical conditions. Give reason.(6)  Describe the different types of corrosion and discuss the factors that affect the corrosion.(6.5) OR Define the factors affecting the corrosion rate.(6.5) Explain the following protective measures for corrosion: (i) Galvanizing and tinning (ii) Cathodic protection (iii) Electroplating. (6) OR Write short note on the following: (i) Electroplating. (ii) Electroless plating. (iii) Corrosion inhibitors. (iv) Cathodic protection. (v) Galvanic corrosion. OR Write short note on electroplating and electroless plating.(5) Explain the term "passivity". what are the factors which affect corrosion?(6.5)  Write short notes on the following: (i) Corrosion inhibitors (ii) Galvanic corrosion (iii) Electroless pating OR Write short note on the following: (i) Electroplating. (ii) Electroless plating. (iii) Corrosion inhibitors. (iv) Cathodic protection. (v) Galvanic corrosion. What is galvanization and explain how it is done. What happens and why? (i) Iron Sheets gets corroded, when riveted with copper rivets. (ii) An iron pole is partly buried under earth. (iii) Zinc plate fixed below the shit. OR  Explain with reasons:- (1) Stainless steel is resistant to atmospheric conversion. (2)Iron in contact with copper corrodes more rapidly than lead. (3) Cr anodes are not used in chromium lating. Write a short note on soil corrosion and its control. Describe the "Electrochemical theory of corrosion".(6.5) What is corrosion of metals? Describe the mechanism of electrochemical corrosion by hydrogen evolution and by oxygen absorption. (7) INSTAGRAM YOUTUBE WHATSAPP WEBSITE LinkedIn