HS Sample Set 1, Round 11 from NSB
Which of the following is NOT true: W) any foreign substance added to water will cause a freezing point drop X) a nonvolatile solute raises the boiling point of a solvent Y) methane has a higher boiling point than ethane Z) freezing point depression is a colligative property
W: W) any foreign substance added to water will cause a freezing point drop
X: X) a nonvolatile solute raises the boiling point of a solvent
Y: Y) methane has a higher boiling point than ethane
Z: Z) freezing point depression is a colligative property
Answer: Y) Y) methane has a higher boiling point than ethane
According to standard chemical nomenclature, what is the formula for aluminum bicarbonate?
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Which of the following types of biological molecules is digested by trypsin: W) proteins X) nucleic acids Y) carbohydrates Z) lipids
W: W) proteins
X: X) nucleic acids
Y: Y) carbohydrates
Z: Z) lipids
Answer: W) W) proteins
Name all of the following 4 choices that are typically considered human autoimmune dysfunctions:
Choices:
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Which of the following is closest to the radius of a hydrogen nucleus: W) 1 micrometer X) 1 angstrom Y) 1 picometer Z) 1 femtometer
W: W) 1 micrometer
X: X) 1 angstrom
Y: Y) 1 picometer
Z: Z) 1 femtometer
Answer: Z) Z) 1 femtometer
Consider a planet where g equals 5.0 meters per second squared. Ignoring friction, if an object started from rest, how far would it fall vertically off a cliff in 4.0 seconds, giving your answer in standard SI units?
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The graph of the relation $$y = \sqrt{25 - x^2}$$ is a: W) circle X) semi-circle Y) parabola Z) straight line
W: W) circle
X: X) semi-circle
Y: Y) parabola
Z: Z) straight line
Answer: X) X) semi-circle
If y varies directly as x and z, and y = 12 when x = 4 and z = 5, find y when x = 10 and z = 20:
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What is the third most common gas naturally found in the Earth’s clean, dry atmosphere?
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The Earth’s greenhouse effect is primarily caused by which of the following: W) incoming solar ultraviolet light is absorbed by the ozone layer X) outgoing infrared solar radiation is trapped by the lower atmosphere Y) incoming infrared solar radiation is trapped by the magnetic field Z) outgoing X-rays are absorbed by the troposphere and reflected to the Earth’s surface
W: W) incoming solar ultraviolet light is absorbed by the ozone layer
X: X) outgoing infrared solar radiation is trapped by the lower atmosphere
Y: Y) incoming infrared solar radiation is trapped by the magnetic field
Z: Z) outgoing X-rays are absorbed by the troposphere and reflected to the Earth’s surface
Answer: X) X) outgoing infrared solar radiation is trapped by the lower atmosphere
Ed the entomologist is setting up mosquito traps in a farmer’s field in Nebraska. Which of the following would be the BEST mosquito attractant to ensure he traps the greatest number and variety of mosquitoes: W) oxygen X) nitrogen Y) dry ice Z) methane
W: W) oxygen
X: X) nitrogen
Y: Y) dry ice
Z: Z) methane
Answer: Y) Y) dry ice
Rounded to the nearest whole number, convert 3,000 meters per second into kilometers per hour:
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Which of the following is LEAST accurate: W) most stars visible to the unaided eye are part of the Milky Way galaxy X) there are 88 constellations officially recognized by the IAU Y) a red supergiant has a hotter surface than our Sun Z) the constellation Leo is located within 9º of the ecliptic
W: W) most stars visible to the unaided eye are part of the Milky Way galaxy
X: X) there are 88 constellations officially recognized by the IAU
Y: Y) a red supergiant has a hotter surface than our Sun
Z: Z) the constellation Leo is located within 9º of the ecliptic
Answer: Y) Y) a red supergiant has a hotter surface than our Sun
Which of the following is NOT true: W) the core of a red supergiant is hotter than the core of a main sequence K-type star X) helium flash is something that occurs in red giant stars Y) the Pleiades is an open star cluster Z) there is more lithium than carbon in the universe
W: W) the core of a red supergiant is hotter than the core of a main sequence K-type star
X: X) helium flash is something that occurs in red giant stars
Y: Y) the Pleiades is an open star cluster
Z: Z) there is more lithium than carbon in the universe
Answer: Z) Z) there is more lithium than carbon in the universe
Carbon monoxide, or CO, will be adsorbed onto the surface of which of the following metals the MOST strongly: W) iron X) nickel Y) cobalt Z) gold
W: W) iron
X: X) nickel
Y: Y) cobalt
Z: Z) gold
Answer: W) W) iron
Arrange the following 3 choices in order of increasing bond energies:
Choices:
Correct Order:
At which of the following pH levels will human pepsin be most active: W) 2 X) 4 Y) 6 Z) 8
W: W) 2
X: X) 4
Y: Y) 6
Z: Z) 8
Answer: W) W) 2
What is the most plentiful class of immunoglobulins in human plasma?
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What constant is given as the amount of electric charge per mole of electrons?
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Which of the following best describes the direction of the force on an electron moving through a magnetic field: W) opposite to the direction of the velocity X) the same direction as the velocity Y) the same direction as the magnetic field Z) perpendicular to the magnetic field
W: W) opposite to the direction of the velocity
X: X) the same direction as the velocity
Y: Y) the same direction as the magnetic field
Z: Z) perpendicular to the magnetic field
Answer: Z) Z) perpendicular to the magnetic field
Which of the following is a second quadrant angle in standard position: W) 500º X) –180º Y) –680º Z) 930º
W: W) 500º
X: X) –180º
Y: Y) –680º
Z: Z) 930º
Answer: W) W) 500º
Giving your answer in simplest radical form, rationalize the denominator of the following expression: $$\frac{\sqrt{3}-\sqrt{5}}{\sqrt{3}-\sqrt{2}}$$
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Which of the following minerals occurs in small amounts in many igneous rocks, is black and shiny, often occurs in small hexagonal blocks, and is soft with good cleavage: W) biotite X) olivine Y) plagioclase Z) quartz
W: W) biotite
X: X) olivine
Y: Y) plagioclase
Z: Z) quartz
Answer: W) W) biotite
Which of the following is NOT true of basalt and gabbro: W) they formed from magma at the same temperature X) they are derived from basaltic magma Y) they formed from magma with the same silica content Z) they are both intrusive igneous rocks
W: W) they formed from magma at the same temperature
X: X) they are derived from basaltic magma
Y: Y) they formed from magma with the same silica content
Z: Z) they are both intrusive igneous rocks
Answer: Z) Z) they are both intrusive igneous rocks
A standard rain gauge consists of a metal canister open at the top in which a funnel drains rainwater into a narrow cylinder. Each time they are deployed to the field, a small amount of light oil is added to the cylinder. This is done to: W) deter birds from drinking the water X) stop the canister from oxidizing Y) prevent the growth of blue-green algae Z) prevent water evaporation
W: W) deter birds from drinking the water
X: X) stop the canister from oxidizing
Y: Y) prevent the growth of blue-green algae
Z: Z) prevent water evaporation
Answer: Z) Z) prevent water evaporation
Which of the following is a widely-used analgesic and antipyretic medication which is not considered an NSAID: W) acetylcysteine X) acetaminophen Y) acetylsalicylic acid Z) ibuprophen
W: W) acetylcysteine
X: X) acetaminophen
Y: Y) acetylsalicylic acid
Z: Z) ibuprophen
Answer: X) X) acetaminophen
Which of the following is LEAST likely to occur for a stargazer observing from mid-northern latitudes during summer months: W) the planet Venus passing within a few degrees of the Moon a few hours after sunset X) the Moon at perigee Y) the planet Saturn passing within 5 degrees of the Moon Z) the planet Mercury within 10 degrees of the zenith
W: W) the planet Venus passing within a few degrees of the Moon a few hours after sunset
X: X) the Moon at perigee
Y: Y) the planet Saturn passing within 5 degrees of the Moon
Z: Z) the planet Mercury within 10 degrees of the zenith
Answer: Z) Z) the planet Mercury within 10 degrees of the zenith
Through how many degrees does the Earth rotate in 8 hours?
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The molal is a concentration unit that is most appropriately used in experimental designs that determine: W) freezing point depression X) osmotic pressure Y) density Z) vapor pressure lowering
W: W) freezing point depression
X: X) osmotic pressure
Y: Y) density
Z: Z) vapor pressure lowering
Answer: W) W) freezing point depression
A 4.0 gram sample of calcium chloride contains 6.0 × 10^22 cations. Giving your answer in scientific notation to the nearest whole number, determine the number of anions in 2 grams of CaCl2. Assume the atomic mass of calcium is 40 and chloride is 35.
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Which of the following is the main target of bacteria by the antibiotic penicillin: W) energy production X) DNA synthesis Y) cell wall synthesis Z) translation
W: W) energy production
X: X) DNA synthesis
Y: Y) cell wall synthesis
Z: Z) translation
Answer: Y) Y) cell wall synthesis
What is the most common term for the form of protection when a non-poisonous frog has the same appearance as a poisonous frog?
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During positron emission, which of the following most likely occurs: W) a proton changes to an electron X) a proton changes to a neutron Y) a neutron changes to an electron Z) a neutron changes to a proton
W: W) a proton changes to an electron
X: X) a proton changes to a neutron
Y: Y) a neutron changes to an electron
Z: Z) a neutron changes to a proton
Answer: X) X) a proton changes to a neutron
Name all of the following 4 isotopes that release energy if they undergo fission:
Choices:
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Identify the type of conic section represented by the equation, $$x^2 + y^2 + 10y + 16 = 0$$:
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Find the area, in centimeters squared and in simplest radical form, of a regular or equilateral triangle whose circumcircle has a radius of 8 centimeters:
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What type of fog frequently forms in valleys when the wind is light and the ground cools until the dew point is reached?
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Giving your answer as morning, afternoon, evening, or night, when does most radiational cooling occur for any location in the U.S.?
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What is the sling psychrometer used to measure?
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From which of the following is camphor derived: W) petroleum distillate X) the wood of an evergreen tree of the laurel family Y) the bark of a fir tree from the Mediterranean Z) the seed pod of the camphor herb
W: W) petroleum distillate
X: X) the wood of an evergreen tree of the laurel family
Y: Y) the bark of a fir tree from the Mediterranean
Z: Z) the seed pod of the camphor herb
Answer: X) X) the wood of an evergreen tree of the laurel family
As seen from the Earth, what planet has the smallest maximum eastern elongation?
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Choosing from noon, sunset, midnight, or sunrise, at what time of the day does a new Moon rise for an observer at mid-northern latitudes in September?
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What is the electron capacity in each of the 4 sublevels s, p, d, and f, respectively?
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A sample of oxygen gas is collected over water at 14ºC. Knowing that the vapor pressure of water at 14ºC is 1.6 kilopascals, and that the pressure of the resultant mixture is 120 kilopascals, find the pressure, to the first decimal place, exerted by the dry oxygen alone:
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What cell in the peripheral blood is the immediate precursor of the macrophage?
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Name all of the following 4 cells that are leukocytes:
Choices:
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As opposed to spontaneous emission, what is the type of emission, first theorized by Albert Einstein, where a photon interacts with an atom’s electron which, when it returns to a ground state, emits a coherent photon?
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Order the following 4 choices from the one with the LOWEST temperature to the one with the HIGHEST temperature:
Choices:
Correct Order:
Simplify $$i^{17}$$.
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Solve the following equation for x: 7 + x² – 2 = 21
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