GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
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- SEMESTER- IIT (New) EXAMINATION - WINTER 2019
Subject Code: 2130504 Date: 30/11/2019
Subject Name: Process Calculation
Time: 02:30 PM TO 05:30 PM Total Marks: 70
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) | Define the terms:-Normality, Molality, and Molarity. | 03 |
| (b) | Find the value of Universal gas constant R in following units.
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| (c) | Classify the material balance. | 07 | |
| Q.2 | (a) | What is Fundamental quantity? Give units of following in terms of fundamental quantity: Area, Volume, and Work. | 03 |
| (b) | Give classification of fuel in brief. | 04 | |
| (c) | Iron metal weighing 500 lb occupies a volume of 29.25L. Calculate the density of Fe in kg/dm3. | 07 | |
| OR | |||
| The diameter and height of a vertical cylindrical tank are 5 ft and 6 ft 6 inch respectively. It is full up to 75% height with carbon tetrachloride (CCl4), the density of which is 1.6 kg/L. Find the mass in kilograms. | |||
| Q.3 | (a) | Define terms: - 1. Raoult’s Law 2. Dalton’s Law 3. Ideal Gas Law. | 03 |
| (b) | Why excess air is provided for combustion process? | 04 | |
| (c) | The analysis magnesite ore obtained from Chalk Hill area, Salem district, yields 81% MgCO3, 14% SiO2, and 5% H2O (By mass) Convert the analysis into mole %. | 07 | |
| OR | |||
| Define CV, GCV and NCV for fuels. | |||
| Q.4 | (a) | Find the equivalent mass of (1) PO4 radicals, and (2) Na3PO4 | 03 |
| (b) | The average molar mass of a flue gas sample is calculated by two different engineers. One engineer uses the correct molar mass of 28 for N2 and determines the average molar mass to be 30.08, the other engineer, using an incorrect value of 14, calculates the average molar mass to be 18.74. (i) Calculate the volume % of nitrogen in the flue gases, (ii) If the remaining components of the flue gases are CO2 and O2, Calculate the volume % each of them. | 04 | |
| (c) | Define terms: 1. Dry-Bulb Temperature 2. Wet Bulb Temperature 3. Dew Point | 07 | |
| Q.5 | (a) | Write a short note on Orsat analysis. | 03 |
| (b) | Discuss Proximate and Ultimate analysis of coal. | 04 | |
| (c) | OR | ||
| Make the Conversion:- 294 g/L H2SO4 and 4.8 mg/mL CaCl2 to normality. | 07 | ||
| Q.5 | (a) | Explain the material balance of extractor. | 03 |
| (b) | Discuss uses of recycling and bypassing operation. | 04 | |
| (c) | Define STP and NTP condition. | 07 | |
| Q.5 | (a) | Explain the material balance of crystallizer. | 03 |
| (b) | Differentiate between intensive property and extensive property. | 04 | |
| (c) | OR | ||
| How many grams of NH4Cl are there in 5 mol? | 07 | ||
| Q.5 | (a) | Discuss humidification operation. | 03 |
| (b) | With a neat sketch show the material balance for the following unit operation: (i) distillation (ii) evaporation. | 04 |
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