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Unit 1 - Advanced Grammar and Reading Comprehension

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Lesson 1 Quiz: Narrative Tenses, Conditionals, and Academic Vocabulary

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1.
Magnetic iron oxide (Magnetite, Fe3O4) is chemically considered a mixed oxide because reacting it with hot concentrated sulfuric acid yields:
Iron(II) sulfate and hydrogen gas only
Elemental iron and sulfur dioxide
Iron(III) sulfate only
A mixture of iron(II) sulfate, iron(III) sulfate, and water vapor
2.
To distinguish between a white precipitate of barium sulfate (BaSO4) and a white precipitate of barium phosphate (Ba3(PO4)2), one should add:
Dilute hydrochloric acid (Ba3(PO4)2 dissolves while BaSO4 remains insoluble)
Ammonium hydroxide solution
Boiling distilled water
Concentrated nitric acid in the dark
3.
Potters use high-temperature ovens called ________ to bake and harden clay vessels.
fridges
blenders
looms
kilns
4.
The sum to infinity (S_infinity) of a geometric series exists and converges if and only if the common ratio satisfies:
|r| < 1 (i.e. -1 < r < 1), and S_infinity = a / (1 - r)
r = 1
|r| >= 2
r > 1
5.
If a particle moves along a straight line such that its position s(t) = t3 - 6 t2 + 9 t meters, the particle comes to an instantaneous rest (velocity v(t) = 0) at times:
t = 2 seconds and t = 4 seconds
t = 1 second and t = 3 seconds
t = 6 seconds
t = 0 seconds only
6.
The mechanical advantage (eta) of an ideal hydraulic press equals all of the following ratios EXCEPT:
Work done by the large piston / Work done on the small piston > 1
Distance moved by the small piston / Distance moved by the large piston (y1 / y2)
Area of the large piston / Area of the small piston (A / a)
Force on the large piston / Force on the small piston (F / f)
7.
In a U-tube manometer containing two immiscible liquids in equilibrium, the heights of the liquid columns measured above the separating surface are:
Proportional to the square of the cross-sectional area of the tube
Inversely proportional to their respective densities (h1 / h2 = rho2 / rho1)
Directly proportional to their densities
Equal regardless of the liquids used
8.
Charles's Law establishes that at constant pressure, the volume of a given mass of gas is directly proportional to its:
Atmospheric density
Absolute temperature in Kelvin (T_K = t_C + 273.15)
Celsius temperature only
Square of the absolute temperature
9.
The universal gas constant R in SI units has the numerical value and dimensions of:
0.0821 J / mol
1.38 x 10−23 Pa . m3
6.022 x 1023 J / K
8.314 J / (mol . K)
10.
The volume expansion coefficient at constant pressure (alpha_v) of an ideal gas is physically measured using:
A venturi meter and manometer
Joly's bulb apparatus or Charles's apparatus with a dry mercury droplet index
A hydrometer
A torsion balance
11.
Phenolphthalein indicator cannot distinguish between an acidic solution and a neutral solution because:
It is blue in both
It precipitates in both
It is colorless in both
It is red in both
12.
The ion directly responsible for the explosion of synaptic vesicles and the release of acetylcholine in the neuromuscular synapse cleft is:
Calcium ion Ca2+
Potassium ion K+
Chloride ion Cl−
Sodium ion Na+
13.
The movement of tension in the tendrils of climbing plants such as peas and grapes depends physiologically on:
Slow growth of the area in contact with the support and rapid growth of the area far from it as a result of the varying distribution of auxins
Water loss through rapid transpiration
Degeneration of tendril cells
Secretion of gluey substances
14.
Rotational cytoplasmic movement inside living plant cells (such as Elodea plants) is indicated by:
Change in cell wall thickness
Mitochondrial division
Stomata open
Movement of chloroplasts immersed in the cytoplasm stream in a constant rotational direction
15.
The phenomenon of natural parthenogenesis in honey bees results in:
Bees are always male, and their somatic cells are haploid (1N) resulting from an unfertilized egg that grows mitotically.
Diploid males
Fertile queens (2N)
Female workers only
16.
The fetal membrane that directly surrounds the fetus and secretes a fluid that protects it from shock and dehydration and facilitates its movement is:
Vitelline membrane
Amnion
Amniotic membrane (Chorion)
Plasma membrane
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