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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.
An aqueous solution of titanium(IV) chloride (TiCl4) is diamagnetic and colorless because:
It absorbs all visible wavelengths of light
Chlorine ions quench all magnetic dipoles
The Ti4+ ion has an electronic configuration of [Ar] 3d0, devoid of unpaired d-electrons
Titanium is an alkali earth metal
2.
The indicator that exhibits a yellow color in acidic medium, blue in alkaline medium, and green in neutral medium is:
Methyl orange
Litmus solution
Phenolphthalein
Bromothymol blue
3.
The sum to infinity of the geometric series 12 + 6 + 3 + 1.5 + ... equals:
Infinity
24
18
36
4.
The sum to infinity of the geometric series 16 + 8 + 4 + 2 + ... equals:
32
24
64
30
5.
Using the Quotient Rule, the derivative of y = (x + 3) / (x - 2) for x != 2 is:
1 / (x - 2)2
(2x + 1) / (x - 2)2
-5 / (x - 2)2
5 / (x - 2)2
6.
If f(x) = |x - 3|, the derivative f'(3) at x = 3:
Does not exist because the left-hand derivative (-1) does not equal the right-hand derivative (+1)
Equals 0
Equals 1
Equals -1
7.
An air bubble released from the bottom of a deep lake expands in volume as it rises towards the surface because:
The hydrostatic pressure decreases as depth decreases, allowing the trapped air to expand according to Boyle's law
Atmospheric pressure increases at the surface
The bubble absorbs water molecules into its gas phase
The water temperature at the surface is near absolute zero
8.
The nitrogen molecule (N2) contains a:
Triple covalent bond (one sigma bond and two pi bonds) sharing 3 electron pairs
Double covalent bond
Coordinate dative bond
Single ionic bond
9.
In the life cycle of the Plasmodium malaria parasite, the human infective phase is:
Sporozoites
Kinetic phase (okinete)
Gametophytes
Merozoites
10.
The atom in the pentose sugar molecule (dioxyribose) to which the nitrogenous base is linked by a covalent bond is:
Carbon atom number 2'
Carbon atom number 5'
Carbon atom number 3'
Carbon atom number 1' (C1')
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