**Description :** All systems of measurement use the same units for which of the following? w) mass x) time y) force z) volume

**Last Answer :** ANSWER: X -- TIME

**Description :** A Poise is the unit of measure of which of the following? w) pressure x) viscosity y) force z) mass

**Last Answer :** ANSWER: X -- VISCOSITY

**Description :** The statement, "In regions where fluid velocity is smaller, the pressure is higher, and vice versa", is known as the principle of: w) Pascal x) Bernoulli y) Torricelli z) Archimedes

**Last Answer :** ANSWER: X -- BERNOULLI

**Description :** What is the SI unit for pressure? w) Torr x) pounds per square inch y) Pascal z) Kelvin

**Last Answer :** ANSWER: Y -- PASCAL

**Description :** What is the SI unit of pressure? w) Pascal x) Torr y) Dyne z) Kelvin

**Last Answer :** ANSWER: W -- PASCAL

**Description :** The SI unit of pressure is the: w) Torr x) dyne per centimeter squared y) atmosphere z) pascal

**Last Answer :** ANSWER: Z -- PASCAL

**Description :** The temperature of a gas is held constant while its volume is reduced. The pressure the gas exerts on the walls of its container increases because its molecules: w) strike the container walls more ... walls with higher speeds y) strike the container walls with greater force z) all of the above

**Last Answer :** ANSWER: W -- STRIKE THE CONTAINER WALLS MORE OFTEN

**Description :** Isobaric processes take place at constant: w) temperature x) volume y) pressure z) energy

**Last Answer :** ANSWER: Y -- PRESSURE

**Description :** If the pressure of a gas is increased by a factor of 4, and the temperature is kept constant, the volume of the gas will change by which of the following factors? w) 4 x) 2 y) 1/2 z) 1/4

**Last Answer :** ANSWER: Z -- 1/4

**Description :** If the volume of a gas changes by a factor of 3, with pressure remaining constant, the temperature in Kelvin will change by a factor of: w) 1/9 x) 1/3 y) 3 z) 9

**Last Answer :** ANSWER: Y -- 3

**Description :** The molar volume of which two elements is the same at standard temperature and pressure? w) fluorine and bromine x) fluorine and iodine y) fluorine and chlorine z) bromine and iodine

**Last Answer :** ANSWER: Y -- FLUORINE AND CHLORINE

**Description :** The force responsible for drops of liquid assuming a spherical shape is known as: w) strong nuclear force x) Van der Waals attraction y) surface tension z) osmotic pressure

**Last Answer :** ANSWER: Y -- SURFACE TENSION

**Description :** The unit of pressure in S.I. units is (a) kg/cm2 (b) mm of water column (c) pascal (d) dynes per square cm (e) bars

**Last Answer :** Answer : c

**Description :** The term "laminar flow" is most often associated with the description of: w) conduction of sound by waves x) current flow in transistors y) effects of viscosity of liquids z) passage of light rays through a liquid

**Last Answer :** ANSWER: Y -- EFFECTS OF VISCOSITY OF LIQUIDS

**Description :** If two different gases have the same volume, temperature, and pressure and behave like ideal gases, they will also be identical in which one of the following ways? w) average molecular velocity x) total mass y) total molecular kinetic energy z) average momentum per molecule

**Last Answer :** ANSWER: Y -- TOTAL MOLECULAR KINETIC ENERGY

**Description :** At zero degrees Celsius and one atmosphere (STP), the volume of a gas is 1,000 milliliters. If the temperature is increased to 25 degrees Celsius and the pressure is doubled, what is the new volume of the gas? w) 546 milliliters x) 500 milliliters y) 1,000 milliliters z) 273 milliliters

**Last Answer :** ANSWER: W -- 546 MILLILITERS

**Description :** At one atmosphere, a cylinder with movable piston contains 2,000 milliliters of gas. If the pressure is increased to 5 atmospheres and the temperature remains unchanged, what is the new volume of the gas? w) 10,000 milliliters x) 400 milliliters y) 1,000 milliliters z) 4,000 milliliters

**Last Answer :** ANSWER: X -- 400 MILLILITERS

**Description :** Liquid "X" is at equilibrium with its vapor in a cylinder and piston apparatus. When the volume of the space above the liquid is 50 ml and the temperature 25!, the vapor pressure of "X" is 120 torr. What will the ... 25!C? Some liquid is always present. w) 30 torr x) 60 torr y) 120 torr z) 240 torr

**Last Answer :** ANSWER: Y -- 120 TORR

**Description :** A gas at 0 degrees C and at normal atmospheric pressure has a volume of 273 cubic centimeters. If it is held at constant pressure until its volume is doubled, its temperature will be which one of the ... it be w) 2 degrees Celsius x) 200 degrees Celsius y) 273 degrees Celsius z) 546 degrees Celsius

**Last Answer :** ANSWER: Y -- 273 DEGREES CELSIUS

**Description :** Assuming all other parameters remain constant, what happens to the pressure of a gas when the volume of the gas is increased? w) increases x) decreases y) fluctuates sinusoidally z) remains the same

**Last Answer :** ANSWER: X -- DECREASES

**Description :** Which of the following is the unit of kinematic viscosity? (A) Pascal (B) Poise (C) Stoke (D) Faraday

**Last Answer :** Answer: Option C

**Description :** An ideal flow of any fluid must satisfy (A) Pascal law (B) Newton's law of viscosity (C) Boundary layer theory (D) Continuity equation

**Last Answer :** Answer: Option D

**Description :** An ideal flow of any fluid must fulfill the following (A) Newton's law of motion (B) Newton's law of viscosity (C) Pascal' law (D) Continuity equation

**Last Answer :** Answer: Option D

**Description :** Consider the following gaseous equilibrium: PCl3 + Cl2 = PCl5 + heat. Which of the following changes will shift it to the right: w) lower the temperature x) remove some Cl2 y) increase the volume z) add a catalyst

**Last Answer :** ANSWER: W -- LOWER THE TEMPERATURE

**Description :** The man credited with the law relating the temperature and volume of a gas is: w) Thomson x) Boyle y) Charles z) Dalton

**Last Answer :** ANSWER: Y -- CHARLES

**Description :** What two primary factors determine whether or no molecular collision leads to a chemical reaction? w) energy and volume of molecules x) energy and mass of molecules y) energy and orientation of molecules z) orientation and volume of molecules

**Last Answer :** ANSWER: Y -- ENERGY AND ORIENTATION OF MOLECULES

**Description :** Pressure is equal to: w) Area divided by force x) force divided by area y) area times force z) area minus force

**Last Answer :** ANSWER: X -- FORCE DIVIDED BY AREA

**Description :** A wavelength is commonly measured in which one of the following units? w) radians x) angstroms y) electron volts z) seconds

**Last Answer :** ANSWER: X -- ANGSTROMS

**Description :** Which of the following units of energy is the smallest: w) calorie x) Joule y) erg z) electron-volt

**Last Answer :** ANSWER: Z -- ELECTRON-VOLT

**Description :** What is the molecular mass of a gas that effuses through a small hole at twice the rate as oxygen gas at the same temperature. (The molecular mass of O2 is 32.) w) 8.0 atomic mass units x) 16 atomic mass units y) 48 atomic mass units z) 64 atomic mass units

**Last Answer :** ANSWER: W -- 8.0 ATOMIC MASS UNITS

**Description :** The index of refraction can be considered: w) a ratio of material thickness between substances x) a ratio of velocities of light in different materials y) a ratio of mass between materials z) to have the units of photons

**Last Answer :** ANSWER: X -- A RATIO OF VELOCITIES OF LIGHT OF DIFFERENT MATERIALS

**Description :** To develop the correct mathematical description of the distribution of radiated energy of a blackbody with respect to wavelength for a given temperature, Planck found it necessary to assume that the molecular ... units or quanta y) radiant energy in a continuous form z) none of the above.

**Last Answer :** ANSWER: X -- RADIANT ENERGY IN DISCRETE UNITS OR QUANTA

**Description :** The Weber and the Maxwell are units of measure of: w) conductance x) electrical current y) magnetic flux z) relative speed

**Last Answer :** ANSWER: Y -- MAGNETIC FLUX

**Description :** Units commonly used for entropy are: w) kilograms per degree Kelvin x) Joules per degree Kelvin y) Newtons per Coulomb z) ergs

**Last Answer :** ANSWER: X -- JOULES PER DEGREE KELVIN

**Description :** The Tesla and the Gauss are units of measure of: w) conductance x) magnetic field strength y) magnetic flux z) electrical current

**Last Answer :** ANSWER: X -- MAGNETIC FIELD STRENGTH

**Description :** Electric current may be expressed in which one of the following units? w) coulombs/volt x) joules/coulomb y) coulombs/second z) ohms/second

**Last Answer :** ANSWER: Y -- COULOMBS/SECOND

**Description :** A light-year can be converted into w) astronomical units x) hours y) foot-candles z) ergs

**Last Answer :** ANSWER: W -- ASTRONOMICAL UNITS

**Description :** Which of the following is the term used for the resistance of a liquid system to flow? w) surface tension x) diffusion y) viscosity

**Last Answer :** ANSWER: Y -- VISCOSITY

**Description :** Which of the following liquid types would have th highest viscosity? w) low molecular mass-polar liquid x) high molecular mass-polar liquid y) low molecular mass-nonpolar liquid d high molecular mass-nonpolar liquid

**Last Answer :** ANSWER: X -- HIGH MOLECULAR MASS-POLAR LIQUID

**Description :** Units of stress are A. Newton B. Joules C. Pascal D. Watt

**Last Answer :** Pascal

**Description :** The unit of work or energy in S.I. units is (A) Newton (B) Pascal (C) Kilogram meter (D) Joule

**Last Answer :** (D) Joule

**Description :** The unit of power in S.I. units is (a) newton (b) pascal (c) erg (d) watt (e) joule.

**Last Answer :** Answer : d

**Description :** Which of the following is TRUE of a sample of gas at a constant temperature when the pressure is doubled? w)the volume doubles x)the volume halves y)the volume remains the same

**Last Answer :** ANSWER: X -- THE VOLUME HALVES

**Description :** During osmosis w) Pure solvent diffuses through a membrane but solutes do not. x) Pure solutes diffuse through a membrane but solvent does not. y) Pure solvent and a solution both diffuse at the same time through a membrane. z) Gases diffuse through a membrane into a solution and build up pressure.

**Last Answer :** ANSWER: W -- PURE SOLVENT DIFFUSES THROUGH A MEMBRANE BUT SOLUTES DO NOT.

**Description :** In 1953, Sir Edmund Hillary and Tenzing Norgay were the first people to reach the summit of Mount Everest from their last previously established camp at an altitude of 27,900 feet (barometric pressure ... degrees Celsius x) boiled at 68 degrees Celsius y) not boiled at any temperature z) sublimed

**Last Answer :** ANSWER: X -- BOILED AT 68 DEGREES CELSIUS

**Description :** Which one of the following is largest? w) the number of molecules in 2 grams of hydrogen gas x) the number of molecules in 60 grams of lead sulfate y) the number of molecules in 20 liters of oxygen gas at standard temperature and pressure z) the population of the United States

**Last Answer :** ANSWER: A - THE NUMBER OF MOLECULES IN 2 GRAMS OF HYDROGEN GAS

**Description :** Which of the following properties is lower for a solution than for the pure solvent? w) osmotic pressure x) vapor pressure y) temperature z) boiling point

**Last Answer :** ANSWER: X -- VAPOR PRESSURE

**Description :** Which of the following properties is greater for a solution than for the pure solvent? w) freezing point x) vapor pressure y) temperature z) boiling point

**Last Answer :** ANSWER: D -- BOILING POINT

**Description :** To increase the solubility of a gas in a liquid as much as possible, we would use: w) low temperature and high pressure. x) high temperature and high pressure. y) high temperature and low pressure. z) low temperature and low pressure.

**Last Answer :** ANSWER: W -- LOW TEMPERATURE AND HIGH PRESSURE.

**Description :** One property a colloidal dispersion has that a solution does not is: w) homogeneity x) filterability y) the Tyndall effect z) osmotic pressure

**Last Answer :** ANSWER: Y -- THE TYNDALL EFFECT