University : Panjab University
Exam : OCET M.Sc Industrial Chemistry 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/5546-20110620192600-10-ICH.pdf
Panjab OCET Industrial Chemistry Question Paper
Time : 90 minutes
Number of Questions : 75
Maximum Marks : 75
Related : Panjab University Biology CET Common Entrance Test Question Paper : www.pdfquestion.in/5611.html
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
(A) only solid and liquid are in equilibrium (B) only liquid and vapor are
(C) only solid and vapor are in equilibrium (D) solid, liquid, and vapor
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.
(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,
(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 Bernoullis 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
16. Coefficient of rigidity is associated with :
(A) only solids (B) only liquids
(C) only gases (D) solids, liquids and gases
17. The size of the particle can be determined using the following phenomena of light :
(A) absorption (B) refraction
(C) scattering (D) polarization
18. The chemical shift, determined through NMR measurements, depends on the :
(A) mass of the molecule (B) mass of the nucleus
(C) NMR frequency (D) electron density around the nucleus
19. In a voltmeter during electrolysis 107·88 gms, silver is liberated by the flow of 96·487 Coulomb charge. The 63·57 gms. of copper will be liberated by the flow of charge :
(A) 96·487 Coulomb (B) 56·85 Coulomb
(C) 188·97 Coulomb (D) 48·24 Coulomb
20. Polarization experiments provide evidence that light is :
(A) a longitudinal wave (B) a stream of particles
(C) a transverse wave (D) nearly monochromatic
21. Displacement of the particle of medium due to progressive wave travelling in +ve x-direction is given by y(x, t) = 0·01 sin 2π (t 0·1 x) where x and y are measured in metres and t in seconds. Wavelength (in metre) of the wave is :
(A) 0·1 (B) 1·0
(C) 10 (D) 100
22. f : D → R, following statement is false :
(A) If f is differentiable, then it is continuous too
(B) If f is continuous, then it is differentiable too
(C) Polynomial function is differentiable and continuous both
(D) Every differentiable function is continuous