Application Of Gas Laws In Anesthesia Quiz

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Application Of Gas Laws In Anesthesia Quiz - Quiz

Do you know the application of gas laws in anesthesia? Do you feel confident about passing this quiz? Many of the gas laws are also applicable to these gases used by the anesthesiologist using an anesthesia delivery system. Considerable knowledge about the application of these gas laws is crucial for every anesthesiologist. If you want to find out about applying gas laws in anesthesia, give this quiz a shot.


Questions and Answers
  • 1. 

    When in the middle of a case your CO2 absorbent turns purple. What would you do?

    • A.

      Change the canister, to get rid of exhausted CO2 absorber

    • B.

      Kiss their forehead and wish them the best of luck

    • C.

      Increase Fresh Gas Flow, to compensate for exhausted CO2 absorbent

    • D.

      Increase their Respiratory rate to blow off excess CO2

    Correct Answer
    C. Increase Fresh Gas Flow, to compensate for exhausted CO2 absorbent
    Explanation
    You can not change the cannister in the middle of the case. Increase FGF to compensate.

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  • 2. 

        You are going to do a peripheral nerve block on a patient and are using Ultrasound to assist you. What would you want to use on your Ultrasound?

    • A.

      Low Frequency to produce a high resolution

    • B.

      High frequency to produce a high resolution

    • C.

      Low frequency to penetrate deep into tissue

    • D.

      High frequency to penetrate deep into tissue

    Correct Answer
    B. High frequency to produce a high resolution
    Explanation
    PPT slide 28. High frequency yields high resolution. The peripheral nerve block was discussed in class as being vety close to the surface of the skin and therefore it does NOT NEED PENETRATION but instead requires a high resolution for us to insure we are indeed hitting the nerve.

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  • 3. 

          Which of these is NOT a distinguishing property of gases?

    • A.

      Strong intermolecular forces

    • B.

      High Velocity

    • C.

      Expand & compress easily

    • D.

      High degree of random Motion

    Correct Answer
    A. Strong intermolecular forces
    Explanation
    N&Z 245

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  • 4. 

         During your pre-op assessment you find your pt has pulmonary edema. How will this affect Diffusion of your gases?

    • A.

      Increase Distance across membrane, and Increase diffusion

    • B.

      Increase Distance across membrane and decrease diffusion

    • C.

      Decrease distance across membrane and increase diffusion.

    • D.

      Decrease distance across membrane and decrease diffusion.

    Correct Answer
    B. Increase Distance across membrane and decrease diffusion
    Explanation
    N&Z 246

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  • 5. 

          What is a good example of Grahams Law in Anesthesia practice?

    • A.

      The Venturi Mask effect where increasing velocity of flow decreases pressure exerted on walls of tube.

    • B.

      Being aware of how air flows through larger (turbulent) and smaller (laminar) airways within lungs.

    • C.

      Determining the partial pressure of O2 in a cylinder of air.

    • D.

      Realizing that CO2 diffuses 20x faster than O2 due to increased solubility of CO2.

    Correct Answer
    D. Realizing that CO2 diffuses 20x faster than O2 due to increased solubility of CO2.
    Explanation
    CO2 diffusing 20 times faster than O2 due to its increased solubility is a good example of Graham's Law in Anesthesia practice. Graham's Law states that the rate of diffusion of a gas is inversely proportional to the square root of its molecular weight. Since CO2 has a higher solubility than O2, it diffuses more rapidly through the respiratory membrane. This knowledge is important in anesthesia practice as it helps in understanding gas exchange and the transport of gases in the body.

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  • 6. 

        When choosing an IV gauge, you want to choose a larger bore IV in order to increase the radius of the tube and thereby increase flow. This is an example of which law?

    • A.

      Poiseuille’s Law

    • B.

      Dalton’s Law

    • C.

      Bernoulli’s Law

    • D.

      Charles Law

    Correct Answer
    A. Poiseuille’s Law
    Explanation
    Poiseuille's Law states that the flow rate of a fluid through a tube is directly proportional to the fourth power of the radius of the tube. Therefore, by choosing a larger bore IV, the radius of the tube increases, resulting in an increase in flow rate. This is why choosing a larger bore IV is recommended in order to increase flow.

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  • 7. 

    Give an Example of a colloid.

    • A.

      0.9 NS

    • B.

      Cough Syrup

    • C.

      Hespan

    • D.

      Lactated ringers

    Correct Answer
    C. Hespan
    Explanation
    Hespan is an example of a colloid. A colloid is a type of mixture where particles are dispersed throughout a medium, but they do not settle out. In the case of Hespan, it is a colloid solution used for intravenous fluid replacement. It consists of small particles of a substance called hetastarch dispersed in a liquid medium. This colloid solution helps to increase blood volume and maintain blood pressure in patients who have lost fluids due to surgery, trauma, or other medical conditions.

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  • 8. 

    At 20 C the pressure inside your cylinder is 800 psi. If you increase your temp to 30 C what will your pressure be?

    • A.

      400 psi

    • B.

      1600 psi

    • C.

      530 psi

    • D.

      1200 psi

    Correct Answer
    D. 1200 psi
    Explanation
    When the temperature of a gas increases, its pressure also increases, assuming the volume and amount of gas remain constant. This relationship is described by the ideal gas law. Therefore, if the temperature is increased from 20°C to 30°C, the pressure inside the cylinder will also increase. The correct answer is 1200 psi, as it is the only option that represents an increase in pressure.

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  • 9. 

    How much air space should there be in a CO2 absorber?

    • A.

      Equal to Tidal Volume

    • B.

      2-3 times the Tidal Volume

    • C.

      2 L/min

    • D.

      Minimal air space should be allowed.

    Correct Answer
    B. 2-3 times the Tidal Volume
    Explanation
    The correct answer is 2-3 times the Tidal Volume. This is because the CO2 absorber is responsible for removing carbon dioxide from the patient's exhaled breath during anesthesia. By having 2-3 times the tidal volume of air space in the absorber, it ensures that there is enough capacity to effectively absorb the CO2 and prevent it from accumulating in the breathing circuit. This allows for proper ventilation and maintains the patient's respiratory function during the procedure.

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  • 10. 

    At sea level, the volume of a gas is 800ml. If you decrease the atmospheric pressure to 608 mm Hg what will the volume of gas be now?

    • A.

      1200 ml

    • B.

      1600 ml

    • C.

      1000 ml

    • D.

      640 ml

    Correct Answer
    C. 1000 ml
    Explanation
    atmospheric pressure is 760. P1 x V1 = P2 x V2
    (760)(800) = (608) ( V2)
    608,000 = 608 ( V2)
    V2 = 1000

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  • 11. 

    Which statement best defines diffusion?

    • A.

      When the numbers of molecules entering and exiting the liquid phase become equal.

    • B.

      The movement of SOLVENT ONLY across a semipermeable membrane from an area of low concentration, to an area of high concentration

    • C.

      The movement of SOLVENT & SOLUTE across a permeable membrane from an area of high concentration to an area of low concentration

    Correct Answer
    C. The movement of SOLVENT & SOLUTE across a permeable membrane from an area of high concentration to an area of low concentration
  • 12. 

    A Hypotonic solution may do what to the cells of the body?

    • A.

      The cell to shrink

    • B.

      Nothing, the osmolar pressures are equal

    • C.

      The cell to become really muscular

    • D.

      The cell swells, and burst

    Correct Answer
    D. The cell swells, and burst
    Explanation
    In a hypotonic solution, the concentration of solutes outside the cell is lower than inside the cell. This creates a concentration gradient that causes water to move into the cell, resulting in the cell swelling. If the influx of water continues, the cell may eventually burst or undergo lysis.

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  • 13. 

    Where would you find Laminar flow in the body?

    • A.

      Terminal Bronchioles

    • B.

      Carina

    • C.

      Larger Airways

    • D.

      Blood Flowing into the heart

    Correct Answer
    A. Terminal Bronchioles
    Explanation
    Laminar flow refers to the smooth and orderly flow of a fluid, without turbulence or disruption. In the body, laminar flow can be found in the terminal bronchioles. These are the smallest airways in the respiratory system, where air flows in a steady and uninterrupted manner. Laminar flow is important in the terminal bronchioles as it allows for efficient gas exchange in the lungs. It ensures that oxygen is delivered to the alveoli and carbon dioxide is removed from the body without any disturbances or obstructions.

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  • 14. 

    Which statement is NOT TRUE regarding the flow of solutions?

    • A.

      The greater the inflow is on one side of the tube than the outflow pressure is on the opposite side of the tube (pressure gradient)the greater the flow

    • B.

      Doubling the radius leads to 16-fold increase in flow

    • C.

      Halving of the radius decreases flow by half

    • D.

      Tripling the radius increases flow 81 fold

    Correct Answer
    C. Halving of the radius decreases flow by half
    Explanation
    The statement "Halving of the radius decreases flow by half" is not true because according to the Hagen-Poiseuille equation, the flow rate is directly proportional to the fourth power of the radius. Therefore, if the radius is halved, the flow rate will decrease by a factor of 16, not by half.

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  • 15. 

    Which one of the following is a good example of Bernoulli's law?

    • A.

      Being aware of how air flows through larger (turbulent) and smaller (laminar) airways within lungs.

    • B.

      The Venturi Mask effect where increasing velocity of flow decreases pressure exerted on walls of tube.

    • C.

      Determining the partial pressure of O2 in a cylinder of air.

    • D.

      Realizing that CO2 diffuses 20x faster than O2 due to increased solubility of CO2.

    Correct Answer
    B. The Venturi Mask effect where increasing velocity of flow decreases pressure exerted on walls of tube.
    Explanation
    The Venturi Mask effect is a good example of Bernoulli's law because it demonstrates the relationship between velocity and pressure in a fluid flow. According to Bernoulli's principle, as the velocity of a fluid increases, the pressure exerted by the fluid decreases. In the case of the Venturi Mask, as the velocity of the flow increases through the narrow portion of the mask, the pressure exerted on the walls of the tube decreases. This principle is utilized in medical settings to deliver a controlled flow of oxygen to patients.

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  • 16. 

    What is the chemical reaction that occurs within the C02 absorber?

    • A.

      Reduction

    • B.

      Oxidation

    • C.

      Neutralization

    • D.

      Hydrolysis

    Correct Answer
    C. Neutralization
    Explanation
    The chemical reaction that occurs within the CO2 absorber is neutralization. Neutralization is a chemical reaction between an acid and a base, resulting in the formation of a salt and water. In the context of a CO2 absorber, the absorber material (usually an alkaline solution) reacts with carbon dioxide gas (acidic) to form a salt and water, effectively neutralizing the acidic nature of CO2.

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  • 17. 

    What is the MAIN component of SodaLyme?

    • A.

      CaOH

    • B.

      NaOH

    • C.

      KOH

    • D.

      H2O

    Correct Answer
    A. CaOH
    Explanation
    The main component of SodaLyme is CaOH, which stands for calcium hydroxide. This compound is commonly used in various industries, including the medical field. It is a white, odorless powder that is highly alkaline and has the ability to neutralize acids. In SodaLyme, calcium hydroxide plays a crucial role in absorbing carbon dioxide and maintaining the pH balance.

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  • 18. 

    What harmful substance is Desflurane known to cause more than other anesthetic agents upon breakdown in a CO2 aborber?

    • A.

      Trifluoroacetylic acid

    • B.

      Compound A

    • C.

      Your gramma's perfume

    • D.

      Carbon Monoxide

    Correct Answer
    D. Carbon Monoxide
    Explanation
    Desflurane is an anesthetic agent that can break down in a CO2 absorber, releasing harmful substances. Among these substances, carbon monoxide is known to be more commonly produced compared to other anesthetic agents. Carbon monoxide is a toxic gas that can bind to hemoglobin in the blood, reducing its ability to carry oxygen, and potentially leading to tissue damage and organ dysfunction. Therefore, the correct answer is carbon monoxide.

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  • 19. 

    Electrocautery (Bovie) is used in surgery to provide homeostasis by burning blood vessels via an electrical current discharged from the machine to the patient. The energy is returned to the patient via a dispersive plate. Which surface is the best choice, from below, to place the dispersive plate?

    • A.

      Thigh or Back

    • B.

      On Big toe

    • C.

      Neck

    • D.

      Wrap around pointer finger

    Correct Answer
    A. Thigh or Back
    Explanation
    The best choice to place the dispersive plate is on the Thigh or Back. This is because these areas have a larger surface area compared to the other options, which allows for better distribution of the electrical current and reduces the risk of burns or damage to the surrounding tissues. Placing the dispersive plate on the Thigh or Back also ensures that the energy is effectively returned to the patient, promoting homeostasis during surgery.

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  • 20. 

    The Sagital plane divides the body into...

    • A.

      Left and Right

    • B.

      Superior and Inferior

    • C.

      Anterior and Posterior

    • D.

      Right and Wrong

    Correct Answer
    A. Left and Right
    Explanation
    The sagittal plane is a vertical plane that divides the body into left and right halves. This plane runs from front to back, dividing the body into symmetrical parts. Therefore, the correct answer is "Left and Right."

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  • 21. 

    What is the biggest concern when working in an operating room using lasers?

    • A.

      Bathroom breaks because laser surgeries are very long

    • B.

      Looking cool in whatever color glasses you are wearing

    • C.

      What music the surgeon is playing

    • D.

      Patient and Staff eye protection

    Correct Answer
    D. Patient and Staff eye protection
    Explanation
    When working in an operating room using lasers, the biggest concern is ensuring the safety of both the patient and the staff by providing adequate eye protection. Lasers emit powerful beams of light that can cause damage to the eyes if proper precautions are not taken. Therefore, it is crucial to prioritize the use of protective eyewear to prevent any potential harm during laser surgeries.

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  • 22. 

    What does Henry's law state?

    • A.

      At a constant volume, the pressure of gas is directly proportional to the temperature.

    • B.

      The amount of gas dissolved in a liquid is directly proportional to the partial pressure of the gas over the liquid and indirectly proportional to temperature

    • C.

      At a constant temperature, the volume of gas varies inversely with the pressure.

    • D.

      The total pressure of a mixture of gases in a closed container at a given temperature is equal to the sum of the pressure that each gas exerts

    Correct Answer
    B. The amount of gas dissolved in a liquid is directly proportional to the partial pressure of the gas over the liquid and indirectly proportional to temperature
    Explanation
    Henry's law states that the amount of gas dissolved in a liquid is directly proportional to the partial pressure of the gas over the liquid and indirectly proportional to temperature. This means that as the partial pressure of a gas increases, more of that gas will dissolve in the liquid. Conversely, as the temperature increases, the solubility of the gas decreases, causing less of it to dissolve in the liquid.

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  • 23. 

    Flow through tubes is primarily dependent upon ___1____ , Flow through orifices is primarily dependent upon ____2____.

    • A.

      Density, Viscosity

    • B.

      Radius of tube, Radius of orifice

    • C.

      Viscosity, Density

    • D.

      Length of tube, length of orifice

    Correct Answer
    C. Viscosity, Density
    Explanation
    Soltuions ppt slide 19.

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  • 24. 

    Which of the follow is NOT a method of heat transfer?

    • A.

      Convection

    • B.

      Condensation

    • C.

      Radiation

    • D.

      Conduction

    Correct Answer
    B. Condensation
    Explanation
    Condensation is not a method of heat transfer because it is the process of a gas or vapor turning into a liquid. It occurs when a gas or vapor loses heat and transforms into a liquid state. Heat transfer, on the other hand, involves the transfer of thermal energy from one object to another. Convection, radiation, and conduction are the three main methods of heat transfer, where heat is transferred through the movement of fluids, electromagnetic waves, and direct contact between objects, respectively.

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  • 25. 

    What is the hydration of SodaLyme?

    • A.

      14-19%

    • B.

      8-10%

    • C.

      19-23%

    • D.

      33%

    Correct Answer
    A. 14-19%
    Explanation
    The correct answer is 14-19%. This range represents the hydration level of SodaLyme. Hydration refers to the amount of water present in a substance. In the case of SodaLyme, it contains 14-19% water content. This hydration level is important to know as it can affect the performance and effectiveness of SodaLyme in various applications.

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  • 26. 

    What are the end products of the CO2 absorber?

    • A.

      CO, H2O, and Heat

    • B.

      Salts, Carbonates, and H2O

    • C.

      CO, Carbonates, and Heat

    • D.

      Carbonates, H20, Heat

    Correct Answer
    D. Carbonates, H20, Heat
    Explanation
    The end products of the CO2 absorber are carbonates, H2O, and heat. When CO2 is absorbed, it reacts with certain chemicals to form carbonates. Water (H2O) is also produced during this process. Additionally, heat is released as a byproduct of the chemical reaction.

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  • 27. 

    Right now you are:

    • A.

      Pretty darn tired of all this studying.

    • B.

      Desperately wanting an alcoholic beverage.

    • C.

      Praying to god you pass these tests.

    • D.

      All of the above.

    Correct Answer
    D. All of the above.
    Explanation
    The given answer "All of the above" is correct because it encompasses all the options mentioned in the question. The person is feeling tired of studying, wanting a drink, and hoping to pass the tests. Therefore, selecting "All of the above" accounts for all the possible feelings and desires mentioned in the question.

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  • 28. 

    Which type of solution will precipitate upon cooling?

    • A.

      Saturated

    • B.

      Super Saturated

    • C.

      Unsaturated

    • D.

      Super Unsaturated

    Correct Answer
    B. Super Saturated
    Explanation
    A super saturated solution is a solution that contains more solute than it can normally hold at a given temperature. When a super saturated solution is cooled, the excess solute will start to come out of the solution and form a precipitate. This is because the solubility of the solute decreases as the temperature decreases, causing the excess solute to become insoluble and form a solid precipitate. Therefore, a super saturated solution will precipitate upon cooling.

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  • 29. 

    How do OR electrical systems work?

    • A.

      Through a Line isolation monitor which grounds the electrical supply to protect staff and patients from shock.

    • B.

      By providing a ground within each individual piece of equipment as well as in plugs for addition safety.

    • C.

      Through an Isolation transformer which seperates electrical system from OR and provides no ground so you can safely touch one wire.

    Correct Answer
    C. Through an Isolation transformer which seperates electrical system from OR and provides no ground so you can safely touch one wire.
    Explanation
    N&Z 253, Electricity ppt slide 14.

    OR electrical supply is NOT GROUNDED

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  • 30. 

    What is a Microshock?

    • A.

      Occurs only in susceptible pateints where there is a direct connection between the heart and extrenal environment.

    • B.

      An electrical shock that is very small, like static electricity.

    • C.

      Gross current shock applied to surface of body.

    • D.

      A Electrical shock that is mostly aborbed by tissues of body with minimal electrical shock going to the heart.

    Correct Answer
    A. Occurs only in susceptible pateints where there is a direct connection between the heart and extrenal environment.
    Explanation
    A microshock is a type of electrical shock that occurs only in susceptible patients who have a direct connection between their heart and the external environment. This means that the electrical current bypasses the body's normal electrical resistance and directly affects the heart. It is important to note that a microshock is different from a gross current shock, which is applied to the surface of the body, and from an electrical shock that is mostly absorbed by the tissues of the body with minimal impact on the heart.

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  • 31. 

    Which of the following will show a FALSE desaturation on your pulse ox monitor?

    • A.

      Carbon Monoxide Poisoning

    • B.

      Hypocarbia

    • C.

      Administration of Methylene Blue dye

    • D.

      Anemia

    Correct Answer
    C. Administration of Methylene Blue dye
    Explanation
    Administration of Methylene Blue dye will show a FALSE desaturation on your pulse ox monitor. Methylene Blue is a medication used to treat methemoglobinemia, a condition in which the blood is unable to carry oxygen effectively. However, pulse oximeters measure the oxygen saturation in the arterial blood, not the methemoglobin level. Methylene Blue causes a change in the light absorption properties of the blood, leading to inaccurate readings on the pulse oximeter. Therefore, it will falsely indicate a desaturation even though the actual oxygen levels may be normal.

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  • 32. 

    Which is the formula for Ohm's Law?

    • A.

      PV=nrT

    • B.

      Area x solubility x pressure gradient / MW x Distance x temp

    • C.

      W = E x I

    • D.

      E = I x R

    Correct Answer
    D. E = I x R
    Explanation
    The formula E = I x R is the correct answer for Ohm's Law. Ohm's Law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance. The formula E = I x R represents this relationship, where E represents the voltage (electromotive force), I represents the current, and R represents the resistance.

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  • 33. 

    A galvanic cell contains two electrodes and is used to measure O2. Describe the reaction which occurs inside the Galvanic cell.

    • A.

      The gold and lead electrodes are consumed when electricity is produced.

    • B.

      The lead electrode is consumed by the reactions of the galvanic cell.

    • C.

      The gold electrode is consumed by the reactions of the galvanic cell.

    • D.

      Exposure to room air will shorten the life of the galvanic cell since this will increase consumption of the elctrode.

    Correct Answer
    B. The lead electrode is consumed by the reactions of the galvanic cell.
    Explanation
    The correct answer is that the lead electrode is consumed by the reactions of the galvanic cell. This means that during the operation of the galvanic cell, the lead electrode undergoes a chemical reaction that results in its consumption or depletion. This consumption of the lead electrode is an integral part of the overall reaction that occurs within the galvanic cell.

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  • 34. 

    Which of the following involves movement of a SOLVENT ONLY across a semi permeable membrane?

    • A.

      Osmosis

    • B.

      Diffusion

    • C.

      Oncotic Pressure

    • D.

      Hypnosis

    Correct Answer
    A. Osmosis
    Explanation
    Osmosis involves the movement of a solvent only across a semi-permeable membrane. In this process, the solvent molecules move from an area of lower solute concentration to an area of higher solute concentration, in order to equalize the concentration on both sides of the membrane. This movement of solvent molecules allows for the balancing of solute concentrations and is a key process in maintaining osmotic balance in living organisms.

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  • 35. 

    Which other gas laws are part of Fick's law?

    • A.

      Charles, Gay-Lusaacs & Boyles Law

    • B.

      Nouba's & Lambert Beer's Law

    • C.

      Henry's & Grahams law

    • D.

      Ohm's & Daltons Law

    Correct Answer
    C. Henry's & Grahams law
    Explanation
    Fick's law is a fundamental principle in physics and chemistry that describes the diffusion of gases. It states that the rate of diffusion is directly proportional to the surface area and concentration gradient, and inversely proportional to the thickness of the barrier. Henry's law states that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. Graham's law states that the rate of effusion or diffusion of a gas is inversely proportional to the square root of its molar mass. Therefore, Henry's law and Graham's law are both related to the diffusion of gases and are part of Fick's law.

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  • 36. 

    What will happen to your flow if you double the length of your tubing?

    • A.

      You will have 1/16 of flow

    • B.

      You will have 1/2 flow

    • C.

      You will double flow

    • D.

      It will stay the same due to decrease pressure gradient

    Correct Answer
    B. You will have 1/2 flow
    Explanation
    N&Z 248

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  • 37. 

    Which of the following is not one of the four factors which may change Laminar to Turbulent flow?

    • A.

      High Gas Flows

    • B.

      Changes in Diameter

    • C.

      Volume of Solution

    • D.

      Branching of tubes

    Correct Answer
    C. Volume of Solution
    Explanation
    The volume of solution is not one of the four factors that may change laminar to turbulent flow. Laminar flow refers to smooth and orderly flow, while turbulent flow is characterized by chaotic and irregular motion. Factors that can cause laminar flow to transition to turbulent flow include high gas flows, changes in diameter, and branching of tubes. However, the volume of solution does not have a direct effect on the transition from laminar to turbulent flow.

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  • 38. 

    Define Suspension.

    • A.

      A solution in which a solute can not be dissolved

    • B.

      The substance which is dissolved in a solution

    • C.

      Homogenous mix of 2 or more substances in equal proportions.

    • D.

      The principal kicking you out of school.

    Correct Answer
    A. A solution in which a solute can not be dissolved
    Explanation
    Suspension refers to a solution in which a solute cannot be dissolved. In a suspension, the solute particles are larger and do not dissolve completely in the solvent. Instead, they remain suspended throughout the solution, giving it a cloudy or opaque appearance. This is different from a solution where the solute particles are smaller and evenly distributed in the solvent, resulting in a clear and homogeneous mixture. In a suspension, the solute particles may settle at the bottom over time and can be separated by filtration.

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  • 39. 

    Vaporization is NOT dependent upon...

    • A.

      Vapor Pressure of Agent

    • B.

      Temperature of environment

    • C.

      Amount of carrier gas used

    • D.

      Density of Agent

    Correct Answer
    D. Density of Agent
    Explanation
    Vaporization is the process of converting a substance from its liquid or solid state into a gas. It is primarily dependent on the vapor pressure of the agent, which is the pressure exerted by the vapor of a substance in equilibrium with its liquid or solid phase at a given temperature. The temperature of the environment also plays a crucial role as it affects the energy available to break the intermolecular forces and allow the substance to vaporize. The amount of carrier gas used can affect the rate of vaporization but is not a determining factor. However, the density of the agent does not directly impact the vaporization process.

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  • 40. 

    Which statement is NOT TRUE about water?

    • A.

      It is considered to be the universal solvent

    • B.

      Heat increases density

    • C.

      Cooling increases density

    Correct Answer
    C. Cooling increases density
    Explanation
    Water is known as the universal solvent because it has the ability to dissolve a wide range of substances. Heat decreases the density of water, causing it to expand and become less dense. However, cooling water increases its density, causing it to contract and become more dense. Therefore, the statement "Cooling increases density" is true, and the correct answer is "None of the statements are untrue" or "All of the statements are true."

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  • 41. 

    At room temp (20 C ) and at sea level the pressure reading on your O2 tank is 750 psi. There is a drastic change in temperature and now your tank reads 1275 psi. What temperature is it?

    • A.

      30 C

    • B.

      34 C

    • C.

      12 C

    • D.

      40 C

    Correct Answer
    B. 34 C
    Explanation
    Charles Law. V1 / T1 = V2 / T2
    (750)/ (20) = (1275) / (T2)
    I prefer to cross multiply and switch the equation up so it reads as such. P1 x T2 = P2 x T1 (750 ) (T2) = (1275) (20)
    (750) (T2) = 25, 500
    25, 500 / 750 = T2 = 34

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  • 42. 

    Which of the following is NOT TRUE about turbulent flow:

    • A.

      It is governed by Reynold’s number (>2000)

    • B.

      Results when molecules of a soltuion encounter walls of a tube in a rough tumbling pattern.

    • C.

      It is caused by high flows, when tube wall is corrugated, & kinks or bends in the system

    • D.

      Occurs when the density of a solution is decreased, and the radius is small

    Correct Answer
    D. Occurs when the density of a solution is decreased, and the radius is small
    Explanation
    Turbulent flow is not caused by a decrease in solution density and a small radius. Turbulent flow occurs when there is a high flow rate, rough surfaces or obstacles in the system, and a high Reynolds number (>2000). It is characterized by a chaotic, random, and tumbling pattern of fluid motion.

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  • 43. 

    Which of the following Facilitates the flow of electrons?

    • A.

      Inductance

    • B.

      Capacitance

    • C.

      Insulators

    • D.

      Reflection

    Correct Answer
    B. Capacitance
    Explanation
    Electricity ptt slide 7 & 8. Both inductance and insulators resist flow of electrons. Capacitance facilitates.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Dec 27, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 10, 2008
    Quiz Created by
    Scottishduffy
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