Diploma-Diploma Civil Engineering 3rd Sem Industrial Stoichiometry(Gujarat Technological University-2012)
Friday, 30 August 2013 04:23anudouglas
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGG.- SEMESTER–III EXAMINATION – WINTER 2012
Subject code: 330503 Date: 04/01/2013
Subject Name: Industrial Stoichiometry
Time: 2:30 pm – 5:00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is Authentic
Q.1 (a) Define: 1. Force. 2. Pressure 3.Work. 4. Density. 08
(b) A rectangular tank having dimensions 4 m x 2 m x 5 m is filled with acid of density 1.2 in C.G.S units.Calculate mass of acid in tank. 06
Q.2 (a) Prove that PV = nRT. 07
(b) A sample of caustic soda flakes contain 60% Na2O by weight.Find purity of flakes.
OR
07
(b) Convert 294 grams per liter sulphuric acid in to Normality and Molarity. 07
Q.3 (a) Prove that mole% = Volume % = Pressure %. 07
(b) A gas contain Hydrogen 80%, Oxygen 10% and Carbon dioxide 10% by volume.Calculate composition in weight %. 07
OR
Q.3 (a) A sample of groundnut seeds contain 45% oil, 40% solids and rest moisture.After extraction,cake composition is 80 % solids, 5% oil and rest moisture.Find % recovery of oil. 07
(b) A 100 kg cellulose solution contains 5.2% cellulose by wt.How many kilograms of 1.2 % solution are required to dilute original solution to make final solution of 4.2%. 07
Q.4 (a) A feed contains 60% Benzene.Top product contain 95% Benzene and bottom product contain 96% toluene.Find quantities of top and bottom products. 07
(b) Give importance of mass balance. 07
OR
Q. 4 (a) 500 grams of acetic acid is mixed with 1 liter of water.Find weight ratio and
mole ratio of acetic acid. 07
(b) Give importance of stoichiometry. 07
Q.5 (a) A coal sample has 75% carbon,8% hydrogen 6% sulphur and rest ash.Calculate quantity of air required for complete combustion of 100 kg of coal. 07
(b) 200 kg Nitrobenzene is prepared from benzene and nitric acid.Claculate amount of benzene and nitric acid required. 07
OR
Q.5 (a) Derive equation for heat of reaction. 07
(b) Ammonia is prepared taking 100 kg nitrogen and 50 kg hydrogen.Find limiting reactant and quantity of ammonia formed. 07
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