HS Sample Set 11, Round 10 from NSB
Trans fats necessarily contain what functional group? W) Ester X) Alkene Y) Alcohol Z) Amine
W: W) Ester
X: X) Alkene
Y: Y) Alcohol
Z: Z) Amine
Answer: X) X) Alkene
Tollens’ test can detect aldehyde-containing compounds. To perform Tollens’ test, an organic compound is mixed with a solution of silver ions. Which of the following indicates that the compound of interest contains an aldehyde? W) A silver mirror is formed X) Insoluble silver oxide precipitates from solution Y) The reaction mixture turns yellow Z) The aldehyde is reduced to an alcohol
W: W) A silver mirror is formed
X: X) Insoluble silver oxide precipitates from solution
Y: Y) The reaction mixture turns yellow
Z: Z) The aldehyde is reduced to an alcohol
Answer: W) W) A silver mirror is formed
What type of leukocyte is involved in phagocytosis of antigen–antibody complexes and parasites?
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Angiotensin acts on the adrenal cortex to promote secretion of what hormone?
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What is the name for the air-lifting process that forces an air mass up and over a mountain or upland, causing the moisture to rain out on the windward slope and leaving a rainshadow effect on the leeward slope?
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The Moon always turns the same face toward the Earth, yet small variations in the visibility of its features appear to take place, such that it appears to rock slowly backward and forward. What effect accounts for this observed behavior? W) Transient phenomena X) Libration Y) Moonset Z) Earthshine
W: W) Transient phenomena
X: X) Libration
Y: Y) Moonset
Z: Z) Earthshine
Answer: X) X) Libration
For a particle in an infinite square potential well, how many nodes exist in the wavefunction within the well, not including the walls, in the third excited state?
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The external presence of which of the following would result in the forward bias of a p-n junction? W) Electric field directed toward the p region X) Electric field directed toward the n region Y) Magnetic field directed toward the p region Z) Magnetic field directed toward the n region
W: W) Electric field directed toward the p region
X: X) Electric field directed toward the n region
Y: Y) Magnetic field directed toward the p region
Z: Z) Magnetic field directed toward the n region
Answer: X) X) Electric field directed toward the n region
Find the value of x for which the following vectors are parallel: 4i – 3j and x i + 12 j.
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Consider a pair of “loaded” six-sided dice. Each die is weighted so that a one is rolled one-third of the time; the other numbers are equally likely. What is the probability of rolling a pair of sixes?
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What US state is responsible for generating the most total net electricity?
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Vapor extraction, steam-assisted gravity drainage, and cold heavy oil production with sand are all methods of extracting what type of petroleum deposit, found primarily in Alberta, Canada?
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Consider ice at 0 °C that is heated until it becomes water at 80 °C. Which of the following statements is TRUE concerning its volume? W) It monotonically decreases X) It decreases until 4 °C, then increases Y) It increases until 4 °C, then remains constant Z) It remains constant
W: W) It monotonically decreases
X: X) It decreases until 4 °C, then increases
Y: Y) It increases until 4 °C, then remains constant
Z: Z) It remains constant
Answer: X) X) It decreases until 4 °C, then increases
Which of the following transition metal 2+ ions is most commonly found in a square planar geometry? W) Copper X) Nickel Y) Iron Z) Cobalt
W: W) Copper
X: X) Nickel
Y: Y) Iron
Z: Z) Cobalt
Answer: X) X) Nickel
If f(x) = \(\sqrt[\,3\,]{x - 6}\), what is \(f^{-1}(5)\)?
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Simplify \(\cos\bigl(x - \tfrac{\pi}{4}\bigr) + \sin\bigl(x - \tfrac{\pi}{4}\bigr)\).
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The leading edge of the bowl of the Big Dipper, from bottom to top, points to what important aid to celestial navigation?
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Tombolos are associated with which of the following? W) Undersea vents X) Islands Y) Volcanoes Z) Wind patterns
W: W) Undersea vents
X: X) Islands
Y: Y) Volcanoes
Z: Z) Wind patterns
Answer: X) X) Islands
Identify all of the following three statements that could be true of a particle undergoing constant acceleration: 1) Zero instantaneous velocity 2) Quadratic increase in velocity 3) Quadratic increase in position
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Which of the following elements is useful as an isotope label due to the two most common isotopes having 1 to 1 relative abundance? W) Hydrogen X) Chlorine Y) Bromine Z) Iodine
W: W) Hydrogen
X: X) Chlorine
Y: Y) Bromine
Z: Z) Iodine
Answer: Y) Y) Bromine
What is the name of the process by which biomass is thermally decomposed in the absence of oxygen?
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What name is used for the semiconductor nanoparticles that are being studied and incorporated into solar cells, LEDs, and color displays?
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Which of the following organisms is characterized as a parazoan? W) Sponge X) Sea cucumber Y) Jellyfish Z) Tapeworm
W: W) Sponge
X: X) Sea cucumber
Y: Y) Jellyfish
Z: Z) Tapeworm
Answer: W) W) Sponge
Which of the following is an example of simple squamous epithelium? W) Stomach lining X) Intestinal lining Y) Lung lining Z) Skin
W: W) Stomach lining
X: X) Intestinal lining
Y: Y) Lung lining
Z: Z) Skin
Answer: Y) Y) Lung lining
What is the partial derivative with respect to y of the expression \(x^5 y^4\)?
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What is the units digit of \(8^{88}\)?
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Which of the following laws is NOT always true in electrical circuits? W) Ohm’s Law X) Coulomb’s Law Y) Kirchhoff’s First Law Z) Faraday’s Law of Induction
W: W) Ohm’s Law
X: X) Coulomb’s Law
Y: Y) Kirchhoff’s First Law
Z: Z) Faraday’s Law of Induction
Answer: W) W) Ohm’s Law
Three resistors are in parallel and have resistances of X, X, and 200 Ω. The equivalent resistance of the circuit is 75 Ω. What is the value of X (in Ω)?
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Which of the following statements is NOT true concerning the hydrogen atom, if only gross structure contributions are accounted for? W) 4s orbitals are at a higher energy than 3d orbitals X) 4d orbitals are at a higher energy than 3d orbitals Y) A 2p → 1s transition is more energetic than a 4p → 2s transition Z) The Balmer series includes only transitions to n = 2
W: W) 4s orbitals are at a higher energy than 3d orbitals
X: X) 4d orbitals are at a higher energy than 3d orbitals
Y: Y) A 2p → 1s transition is more energetic than a 4p → 2s transition
Z: Z) The Balmer series includes only transitions to n = 2
Answer: W) W) 4s orbitals are at a higher energy than 3d orbitals
Identify all of the following three diatomic compounds that MO theory predicts to be paramagnetic: 1) B₂ 2) C₂ 3) N₂
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Which of the following is closest to the percentage of the ocean area that is represented by continental shelves? W) 10 X) 20 Y) 30 Z) 40
W: W) 10
X: X) 20
Y: Y) 30
Z: Z) 40
Answer: W) W) 10
What is the name for the circular ocean currents that pinch off from ocean currents in sections, causing drastic changes in sound velocity at the interface?
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Zinc finger motifs are commonly found in proteins that do which of the following? W) Hydrolyze sugars X) Sequester calcium Y) Catalyze polymerization Z) Bind to DNA
W: W) Hydrolyze sugars
X: X) Sequester calcium
Y: Y) Catalyze polymerization
Z: Z) Bind to DNA
Answer: Z) Z) Bind to DNA
Which of the following is a correct classification of spectrin proteins? W) Transmembrane X) Receptor Y) Channel Z) Cytoskeletal
W: W) Transmembrane
X: X) Receptor
Y: Y) Channel
Z: Z) Cytoskeletal
Answer: Z) Z) Cytoskeletal
DOE scientists at SLAC have previously shown that electrons can be accelerated by riding a wave of plasma. Recently, they showed that what similar particles, products of beta-plus decay, can also be accelerated in the same manner?
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Identify all of the following three emissions that are reduced in biodiesel as compared to petroleum diesel: 1) Sulfur 2) Particulates 3) Carbon monoxide
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In what constellation can the Crab Nebula be found?
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What is the name for a front that is formed when a cold front overtakes a warm front and warm air is separated from the cyclonic center?
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A car brakes to a stop over 15 m, applying a constant force of 800 N to the car. In joules, what was the initial kinetic energy of the car?
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A block attached to a spring is experiencing simple harmonic motion with a period of 4.0 s. What would the period be, to two significant figures, if the mass of the block was halved?
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Rank the pH of the following three solutions, from lowest to highest: 1) One molar solution of hydrochloric acid; 2) One molar solution of acetic acid; 3) One molar solution of ammonium perchlorate.
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Identify all of the following three molecules that are likely to act as electrophiles in a substitution reaction: 1) Ammonia; 2) Bromide; 3) Methyl bromide.
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In base 7, what is 4 + 6?
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Evaluate \(\displaystyle \int_{x=-8}^{0} \sqrt{64 - x^2}\,dx\).
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What is the net ATP gain during glycolysis per molecule of glucose?
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In a young stem, what is the name for the immature tissues that will specifically develop into xylem and phloem?
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