Day 1 – Physical and Chemical Principles

1) Which particle has high penetrating power?a) Alpha particlesb) Beta particlesc) Gamma raysd) Helium nucleus

2) The first noble gas discovereda) Heliumb) Neonc) Argond) Krypton

3) It is a measure of how much of a gas deviates from Ideal Gas behaviora) Compressibility Factorb) Fugacityc) Activityd) Ionic Strength

4) What is the pOH of a 0.200 M NaOH (aq) at 25°C?a) 13.30b) 6.99c) 0.70d) 5.40

5) Pressure exerted by a certain gas in a mixture of gasesa) Vapor Pressureb) Partial Pressurec) Absolute Pressured) Osmotic Pressure

6) The main buffer system of the human blooda) H2CO3 - HCO3

b) H2CO3 - CO32-

c) CH3COOH - CH3COO-

d) NH2CONH2 - NH2CONH+

7) The half-life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?a) 1/6b) 1/3c) 1/8d) ¼

8) Which of the following has the smallest diameter?a) O2-

b) Na+

c) F-

d) Al3+

9) What is the energy of one mole of light that has a wavelength of 400 nm?a) 4.97 x 10-28 Jb) 4.97 x 10-19 Jc) 2.99 x 10-4 Jd) 2.99 x 105 J

10) What is the electron-pair geometry of the central oxygen atom of ozone (O3)?a) linearb) trigonal planarc) tetrahedrald) trigonal bipyramidal

11) In the reaction, CO(g) + NO2(g) CO2(g) + NO(g), which of the following changes would result in the formation of more products at equilibrium?a) increasing the pressureb) removing CO from the reactionc) adding NO2 to the reactiond) adding CO2 to the reaction

12) How long (in hours) must a current of 5.0 amperes be maintained to electroplate 60 g of calcium from molten CaCl2?a) 27 hoursb) 8.3 hoursc) 11 hoursd) 16 hours

13) In the standard notation for a voltaic cell, the double vertical line "||" represents:a) phase boundaryb) wire (metal) connectionc) salt bridged) standard hydrogen electrode

14) Antibonding molecular orbitals are produced bya) constructive interaction of atomic orbitals.b) destructive interaction of atomic orbitals.c) the overlap of the atomic orbitals of two negative ionsd) none of these

15) Which is the strongest acid?a) (a) HClO4

b) (b) HClO3

c) (c) HClO2

d) (d) HClO16) A real gas most closely approaches the behavior of an ideal

gas under conditions of:a) high P and low Tb) low P and high Tc) low P and Td) high P and T

17) The ______ sphere is enclosed in brackets in formulas for complex species, and it includes the central metal ion plus the coordinated groups.a) ligandb) donorc) oxidationd) coordination

18) The most abundant metal in the earth's crust is:a) Alb) Fec) Nad) Ca

19) The atom formed by the beta decay of carbon-14 is...a) Oxygen-18b) Beryllium-10c) Boron-14d) Nitrogen-14

20) Plexiglass is a commercial name ofa) Glyptalb) Polyacrylo nitrilec) Polymethyl methacrylated) Polyethyl acrylate

Day 2 – Chemical Engineering Principles

1) What is the degrees of freedom of triple point of water?a) 3b) 2c) 1d) 0

2) The thermodynamic law, PVy = constant, is not followed by thea) free expansion of an ideal gas.b) adiabatic expansion of steam in turbine.c) adiabatic compression of air.d) ideal compression of air.

3) For equilibrium process (i.e. reversible) in an isolated systema) ds = 0b) ds < 0c) ds > 0d) ds = constant

4) Work done in case of free expansion isa) indeterminateb) zeroc) negatived) positive

5) Cp/Cv for monoatomic gases isa) 1.44b) 1.66c) 1.99d) 1

6) Kinematic viscosity of 1 m2 /second is equivalent to __________ stokes.a) 10b) 102

c) 103

d) 104

7) Consider the reaction: 4NO2(g) + O2(g) 2N2O5(g), ΔHrxn = –111kJ. If N2O5(s) is formed instead of N2O5(g) in the above reaction, the ΔHrxn value will be (ΔH of sublimation for N2O5 is 54 kJ/mol):a) –219 kJb) –165 kJc) + 54 kJd) + 219 kJ

8) Which of the following is an intensive property?a) Temperatureb) Viscosityc) Surface Tensiond) All of these

9) Milk is pasteurized if it is heated to 63OC for 30 min, but if it is heated to 74°C it only needs 15 s for the same result. What is the activation energy of this sterilization process?a) 125,500 J/molb) 422,000 J/molc) 11,500 J/mold) 34,500 J/mol

10) What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction?a) 0

b) 1c) 2d) 3

11) A reaction has the stoichiometric equation A + B = 2R. What is the order of reaction?a) 3b) 2c) 1d) Insufficient information

12) For an ideal plug flow reactor, the value of Peclet number isa) Infinityb) 0c) 1d) 10

13) Air at 20◦C blows over a hot plate 50 by 75 cm maintained at 250◦C. The convection heat-transfer coefficient is 25 W/m2 · ◦C. Calculate the heat transfer.a) 5.224 kWb) 8.205 kWc) 2.156 kWd) 6.899 kW

14) The Grashoff number is defined as the ratio of thea) buoyancy to inertial forces.b) buoyancy to viscous forces.c) inertial to viscous forces.d) buoyancy to surface tension forces.

15) Absorptivity and refletivity of a perfect black body area) 1 and 0b) 0 and 1c) 1 and infinityd) 0 and 0.5

16) For a perfectly transparent surface (like gases), thea) absorptivity = 0b) transmissivity = 1c) reflectivity = 0d) All of these

17) Correction is applied to LMTD for __________ flow.a) parallelb) counterc) crossd) none of these

18) A cylindrical oil-storage tank is 75 ft deep (ρ=55 lbm/ft3). Its top is open to the atmosphere. Find Pgauge at the bottom.a) 197.4 kPab) 89.1 kPac) 101.4 kPad) 210.5 kPa

19) Stoke's law is valid, when the particle Reynolds number isa) < 1b) > 1c) < 5d) none of these

20) Pressure drop in packed bed for turbulent flow is given by what equation?a) Kozney-Karmanb) Blake-Plummerc) Leva'sd) Hagen-Poiseulle's

Day 3 – General Engineering

1) Locate the centroid of the area.a) (0.50, 0.50) mb) (0.45, 0.45) mc) (0.30, 0.30) md) (0.35, 0.35) m

2) The sum of Patrick’s age and Marko’s age is 58. Eight years ago, Patrick was twice as old as Marko then. How old is Marko?a) 20b) 22c) 36d) 38

3) The blood groups of 200 people is distributed as follows: 50 have type A blood, 65 have B blood type, 70 have O blood type and 15 have type AB blood. If a person from this group is selected at random, what is the probability that this person has O blood type?a) 0.25b) 0.40c) 0.35d) 0.38

4) Find the area enclosed by f(y) = 2y2 and g(y) = 4+y2.a) 32/3b) 30/3c) 18/3d) 15/2

5) You throw a ball straight up into the air. The position of the ball can be written as s(t) = -5t2+4t+1. What is the acceleration of the ball at t=0.75 s?a) 9.8 m/s2

b) – 9.8 m/s2

c) 10 m/s2

d) -10 m/s2

6) Find the distance between the points (-5,-5) and (-6,-6)a) √ 2b) 2√2c) √ 3d) 2√3

7) In one state, 52% of the voters are Republicans, and 48% are Democrats. In a second state, 47% of the voters are Republicans, and 53% are Democrats. Suppose a simple random sample of 100 voters are surveyed from each state. What is the probability that the survey will show a greater percentage of Republican voters in the second state than in the first state?a) 0.04b) 0.71c) 0.24d) 0.76

8) What is the small possible sum of square of two numbers, if their product is -16?a) 18b) 32c) 16d) 8

9) Find the weight of the snowball 1.2 m in diameter if the wet compact snow of which this ball is made weighs 480 kg/m3

a) 398.2 kgb) 434.3 kgc) 367.8 kgd) 411.7 kg

10) Two balls, one 15 cm in diameter and the other 10 cm in diameter, are placed in a cylindrical jar 20 cm in diameter, as shown in Figure 014. Find the volume of water necessary to cover them.a) 4777.84 cm3

b) 4522.12 cm3

c) 5120.03 cm3

d) 3665.20 cm3

11) A box is to be made of a piece of cardboard 9 inches square by cutting equal squares out of the corners and turning up the sides. Find the volume of the largest box that can be made in this way.a) 32 in2

b) 28 in2

c) 36 in2

d) 54 in2

12) A ladder 20 ft long leans against a vertical wall. If the top slides downward at the rate of 2 ft/s, find how fast the lower end is moving when it is 16 ft from the wall.a) 0.9 ft/sb) 1.0 ft/sc) 1.2 ft/sd) 1.5 ft/s

13) A radioactive element follows the law of exponential change and has a half-life of 38 hours. How long will it take for 90% of the radioactivity of the element to be dissipated? a) 211.10 hrsb) 172.32 hrsc) 126.23 hrsd) 104.09 hrs

14) A man in a wharf 6m above the water pulls in a rope to which a boat is tied at the rate of 1.2 m/s. at what rate is the boat approaching the wharf when there is 7.5 m of the rope out?a) 18 m/sb) 17.5 m/s c) 12.5 m/sd) 15 m/s

15) What time after 3:00 o'clock will the minute-hand and the hour-hand of the clock be together for the first time?a) 3:15:00.00b) 3:16:21.82c) 3:17:12.33d) 3:16:45.07

16) Find the equation of the curve for which y”=12/x3 if it passes through (1,0) and is tangent to the line 6x+y=6 at that point.a) xy+6x=6b) 6y+6x=1c) 6xy+1=6d) 3xy+2x=1

17) Find the area enclosed by the cardiod r=a(1-sinx)a) 3πa2

b) 3πa2/2c) 5πa2/2d) 2πa2

18) Two painters work together and take an average of 8 hours to paint standard 12 by 12 rooms. One of the painters, who can do the work alone in 14 hours, is sick today. How long will it take the other painter to complete the job on his own?a) 18.7 hrsb) 15.3 hrsc) 18.0 hrsd) 16.0 hrs

19) One pipe can fill a pool 1.25 times faster than a second pipe. When both pipes are opened, they fill the pool in five hours. How long would it take to fill the pool if only the slower pipe is used?a) 12.00 hrsb) 8.25 hrsc) 11.25 hrsd) 10.75 hrs

20) Identify the conic section that is represented by the equation x2 - 3y2 + 6x + 2y - 5 = 0a) Circleb) Ellipsec) Hyperbolad) Parabola