University : Panjab University
Exam : OCET M.E Chemical Other Common Entrance Test
Document Type : Question Booklet
Website : exams.puchd.ac.in
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/exams.puchd.ac.in/5535-20110620192105-08-MCH.pdf
Panjab Chemical OCET Question Paper
Question Booklet Series : A
Important : Please consult your Admit Card / Roll No. Slip before filling your Roll Number on the Test Booklet and Answer Sheet.
Related : Panjab University M.E ECE OCET Other Common Entrance Test Question Paper : www.pdfquestion.in/5531.html
Time : 90 minutes
Number of Questions : 75
Maximum Marks : 75
DO NOT OPEN THE SEAL ON THE BOOKLET UNTIL ASKED TO DO SO
Instructions
1. Write your Roll No. on the Question Booklet and also on the OMR Answer Sheet in the space provided and nowhere else.
2. Enter the Subject and Series Code of Question Booklet on the OMR Answer Sheet. Darken the corresponding bubbles with Black Ball Point / Black Gel pen.
3. Do not make any identification mark on the Answer Sheet or Question Booklet.
4. To open the Question Booklet remove the paper seal (s) gently when asked to do so.
5. Please check that this Question Booklet contains 75 questions. In case of any discrepancy, inform the Assistant Superintendent within 10 minutes of the start of test.
Model Questions
1. 10 kg of 70% aqueous NaOH solution is mixed with 16 kg of 80% aqueous H2SO4 solution to produce Na2SO4. The percent excess is approximately equal to :
(A) 39 (B) 49
(C) 59 (D) 69
2. Density of dry air at 100ºC and 1.5 bar is approximately equal to :
(A) 1.4 kg/m3 (B) 2.4 kg/m3
(C) 3.4 kg/m3 (D) 4.4 kg/m3
3. Molarity of a 20% by weight aqueous solution of NaOH at 30ºC having density equal to 1120 kg/m3 will be :
(A) 4.6 (B) 7.6
(C) 9.6 (D) 5.6
4. The vapour pressure in mmHg of water at 25ºC (average molar latent heat of vaporization 9720 cal/ mol) using Clausius-Clapeyron equation will be :
(A) 27.69 (B) 63.76
(C) 12.02 (D) 121.52
5. 200 kg of NH4NO3 charged to a reactor gave 70 kg of N2O NH4NO3 → N2O + 2H2O The percent conversion is :
(A) 43.6 (B) 63.6
(C) 53.6 (D) 73.6
6. The total pressure of vapours at equilibrium at 30ºC in contact with a liquid mixture containing 25 mol% benzene and 75 mol% toluene will be :
(Take PO C6H6 = 119 mm Hg, PO C7H8 = 36.7 mm Hg),
(A) 158 mm Hg (B) 57.27 mm Hg
(C) 760 mm Hg (D) 48 mm Hg
7. For estimation of heat capacity of a solid compound, one can use :
(A) Clapeyron’s equation (B) Gibb’s equation
(C) Kopp’s rule (D) Trouton’s rule
8. 90 kg/hr of air is being compressed from 1 atm (H^ = 117 kcal/kg) to 10 atm (H^ = 122 kcal/kg). The exit velocity from the compressor is 60 m/s. Assuming adiabatic condition, what is the hp required for compression ?
(A) 1.54 (B) 3.84
(C) 0.76 (D) 10.36
9. The Reynolds number of a solid particle falling in a fluid is 1500. Drag coefficient will be :
(A) 0.016 (B) 0.0107
(C) 0.44 (D) 0.064
10. The sphericity shape factor for a cylinder having diameter is length :
(A) 1.0 (B) 0.874
(C) 0.806 (D) 0.60
11. An oil having density of 878 kg/m3 is flowing through a pipe having 0.1541 m diameter in which a sharp edged orifice is installed. The pressure difference across the orifice is 93.2 kN/m2. The velocity of the oil in m/s corresponding to an orifice coefficient 0.61 is :
(A) 8.97 (B) 89.7
(C) 0.897 (D) 897
12. Water at 50ºC (density = 988 kg/m3, vapour pressure = 12.35 kPa) is in an open tank. The pump is 3.0 m above the open tank. The velocity in the pipe is 0.9 m/s. The available NPSH will be approximately :
(A) 5.14 m (B) 10.28 m
(C) 7.14 m (D) 3.14 m
13. Pump efficiency of a typical centrifugal pump having 1000 gal/min capacity is :
(A) 20% (B) 30%
(C) 50% (D) 85%
14. The Fanning friction factor for a flowing fluid having Reynolds number 1000 is :
(A) 0.024 (B) 0.016
(C) 0.064 (D) 0.048
15. Heat loss per m2 of surface area for an insulating wall composed of 25.4 mm thick fiber insulating board (k = 0.048 W/(m)(k)), where the inside temperature is 352.7 k and the outside temperature is 297.1 k is approximately :
(A) 105 W (B) 210 W
(C) 315 W (D) 420 W
16. Range of heat transfer coefficient in W/(m2)(k) for condensing steam is :
(A) 6000–25000 (B) 300–500
(C) 50–200 (D) 10–50