Panjab University OCET MSc Industrial Chemistry Model Question Paper : www.exams.puchd.ac.in

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Panjab University
OCET 2011
Subject : M.Sc. (Industrial Chemistry)
Time : 90 minutes Number of Questions : 75 Maximum Marks : 75

Model Question List : http://exams.puchd.ac.in/show-noticeboard.php?id=211
Model Question Paper : http://exams.puchd.ac.in/includes/no...600-10-ICH.pdf

1. If two light waves are coherent :
(A) their amplitudes are the same (B) their frequencies are the same
(C) their wavelengths are the same (D) their phase difference is constant

2. ?LED? stands for :
(A) less energy donated (B) luminescent energy developer
(C) light energy degrader (D) light emitting diode

3. The total number of electron states with n = 2 and l = 1 for an atom is :
(A) 2 (B) 4
(C) 6 (D) 8

4. A LASER must be pumped to achieve :
(A) a meta-stable state (B) fast response
(C) stimulated emission (D) population inversion

5. The ?triple point? is that point for which the temperature and pressure are such that :
(A) only solid and liquid are in equilibrium (B) only liquid and vapor are in equilibrium
(C) only solid and vapor are in equilibrium (D) solid, liquid, and vapor are all in equilibrium

6. An adiabatic process for an ideal gas is represented on a P-V diagram by :
(A) a horizontal line (B) a vertical line
(C) a circle (D) none of these

7. The mean free path of molecules in a gas is proportional to :
(A) the molecular cross-sectional area
(B) the reciprocal of the molecular cross-sectional area
(C) the root-mean-square molecular cross-sectional area
(D) the molecular mass

8. The change in entropy is zero for :
(A) the reversible adiabatic process (B) the reversible isothermal
(C) the reversible isobaric (D) all adiabatic process.

9. Two wires made of dirrerent materials have the same uniform current density. They carry the same current only if :
(A) their lengths are the same
(B) their cross-sectional area are the same
(C) both their lengths and cross-sectional areas are the same
(D) the potential differences across them are the same.

10. The magnetic properties of materials stem chiefly from :
(A) particles with north poles (B) particles with south pole
(C) motion of protons within nuclei (D) electron magnetic dipole moments

11. The sinusoidal voltage V(t) has an rms value 100 V. Its maximum value is :
(A) 100 V (B) 707 V
(C) 70·7 V (D) 141 V

12. A heat engine that in each cycle does positive work and rejects heat, with no heat input, would violet :
(A) the zeroth law of themodynamics (B) the first law of thermodynamics
(C) the second law of thermodynamics (D) the third law of thermodynamics

13. For the structural analysis of crystals, x-rays are used, because :
(A) x-rays has wavelengths of the order of interatomic spacing.
(B) x-rays are highly penetrating radiations.
(C) wavelength of x-rays is of the order of nuclear size.
(D) x-rays are coherent radiations

14. An application of Bernoulli?s equations for fluid flow is found in the :
(A) dynamic lift of an airplane (B) viscosity meter
(C) capillary rise (D) hydraulic press

15. In air a solid sphere falls down with some terminal velocity. When falling in vacuum it will have :
(A) same terminal velocity (B) less terminal velocity
(C) more terminal velocity (D) no terminal velocity