Day 1 and Day 3

Day 1 – Physical and Chemical Principles 1) Which particle has high penetrating power? a) Alpha particles b) Beta particles c) Gamma rays d) Helium nucleus 2) The first noble gas discovered a) Helium b) Neon c) Argon d) Krypton 3) It is a measure of how much of a gas deviates from Ideal Gas behavior a) Compressibility Factor b) Fugacity c) Activity d) Ionic Strength 4) What is the pOH of a 0.200 M NaOH (aq) at 25°C? a) 13.30 b) 6.99 c) 0.70 d) 5.40 5) Pressure exerted by a certain gas in a mixture of gases a) Vapor Pressure b) Partial Pressure c) Absolute Pressure d) Osmotic Pressure 6) The main buffer system of the human blood a) H2CO3 - HCO3 b) H2CO3 - CO32c) CH3COOH - CH3COOd) 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) 1/6 b) 1/3 c) 1/8 d) ¼ 8) Which of the following has the smallest diameter? a) O2b) Na+ c) Fd) Al3+ 9) What is the energy of one mole of light that has a wavelength of 400 nm? a) 4.97 x 10-28 J b) 4.97 x 10-19 J c) 2.99 x 10-4 J d) 2.99 x 105 J 10) What is the electron-pair geometry of the central oxygen atom of ozone (O3)? a) linear b) trigonal planar c) tetrahedral d) 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 pressure

b) removing CO from the reaction c) adding NO2 to the reaction d) 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 hours b) 8.3 hours c) 11 hours d) 16 hours 13) In the standard notation for a voltaic cell, the double vertical line "||" represents: a) phase boundary b) wire (metal) connection c) salt bridge d) standard hydrogen electrode 14) Antibonding molecular orbitals are produced by a) constructive interaction of atomic orbitals. b) destructive interaction of atomic orbitals. c) the overlap of the atomic orbitals of two negative ions d) none of these 15) Which is the strongest acid? a) (a) HClO4 b) (b) HClO3 c) (c) HClO2 d) (d) HClO 16) A real gas most closely approaches the behavior of an ideal gas under conditions of: a) high P and low T b) low P and high T c) low P and T d) 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) ligand b) donor c) oxidation d) coordination 18) The most abundant metal in the earth's crust is: a) Al b) Fe c) Na d) Ca 19) The atom formed by the beta decay of carbon-14 is... a) Oxygen-18 b) Beryllium-10 c) Boron-14 d) Nitrogen-14 20) Plexiglass is a commercial name of a) Glyptal b) Polyacrylo nitrile c) Polymethyl methacrylate d) Polyethyl acrylate Day 2 – Chemical Engineering Principles 1) What is the degrees of freedom of triple point of water? a) 3 b) 2 c) 1 d) 0

2) The thermodynamic law, PVy = constant, is not followed by the a) 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 system a) ds = 0 b) ds < 0 c) ds > 0 d) ds = constant 4) Work done in case of free expansion is a) indeterminate b) zero c) negative d) positive 5) Cp/Cv for monoatomic gases is a) 1.44 b) 1.66 c) 1.99 d) 1 6) Kinematic viscosity of 1 m2 /second is equivalent to __________ stokes. a) 10 b) 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 kJ b) –165 kJ c) + 54 kJ d) + 219 kJ 8) Which of the following is an intensive property? a) Temperature b) Viscosity c) Surface Tension d) All of these

Day 3 – General Engineering 1) Locate the centroid of the area. a) (0.50, 0.50) m b) (0.45, 0.45) m c) (0.30, 0.30) m d) (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) 20 b) 22 c) 36 d) 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) 0.25 b) 0.40 c) 0.35 d) 0.38 4) Find the area enclosed by f(y) = 2y2 and g(y) = 4+y2. a) 32/3 b) 30/3 c) 18/3 d) 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)

√2

b)

2√2

c)

√3

d)

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) 0.04 b) 0.71 c) 0.24 d) 0.76 8) What is the small possible sum of square of two numbers, if their product is -16?

a) 18 b) 32 c) 16 d) 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 kg b) 434.3 kg c) 367.8 kg d) 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/s b) 1.0 ft/s c) 1.2 ft/s d) 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 hrs b) 172.32 hrs c) 126.23 hrs d) 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/s b) 17.5 m/s c) 12.5 m/s d) 15 m/s 15) What time after 3:00 o'clock will the minutehand and the hour-hand of the clock be together for the first time? a) 3:15:00.00 b) 3:16:21.82 c) 3:17:12.33 d) 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=6 b) 6y+6x=1

c) 6xy+1=6 d) 3xy+2x=1 17) Find the area enclosed by the cardiod r=a(1sinx) a) 3πa2 b) 3πa2/2 c) 5πa2/2 d) 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 hrs b) 15.3 hrs c) 18.0 hrs

d) 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 hrs b) 8.25 hrs c) 11.25 hrs d) 10.75 hrs 20) Identify the conic section that is represented by the equation x2 - 3y2 + 6x + 2y - 5 = 0 a) Circle b) Ellipse c) Hyperbola d) Parabola