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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.
In the arithmetic sequence (3, 7, 11, 15, ...), the common difference d and the 20th term (T_20) are respectively:
d = 4 and T_20 = 79
d = 4 and T_20 = 83
d = 3 and T_20 = 60
d = 5 and T_20 = 98
2.
The atomic radii of the elements from Chromium to Copper remain remarkably steady and nearly constant across the first transition series because of:
The mutual compensation between the increasing nuclear charge and the repulsive forces among accumulated 3d electrons
The identical number of neutrons in their nuclei
The sudden increase in atomic mass
Decreasing ionization energies
3.
A fixed quantity of an ideal gas has a volume of 600 cm3 at 27 °C. If the gas is heated to 127 °C under constant pressure, its new volume will be:
800 cm3
900 cm3
700 cm3
1200 cm3
4.
If a, b, c form a geometric sequence of positive real numbers, the geometric mean b equals:
b = a * c
b = a2 + c2
b = + sqrt(a * c)
b = (a + c) / 2
5.
Which of the following solutions has the lowest pH value (strongest acidity) at equal concentration?
CH3COOH
NH4OH
HCl
NaCl
6.
The 7th term of the geometric sequence (2, 6, 18, ...) is:
729
1458
486
162
7.
Select the correct grammatical structure and example for: Third Conditional (Past Unreal Situations):
If + past simple, would + infinitive
If + had + V3, would + infinitive
If + present simple, will + infinitive
If + past perfect (had + V3), would + have + past participle (V3): 'If he had studied harder, he would have passed the exam.'
8.
I have already booked the flight tickets. I ________ to London next Friday.
am traveling
traveled
travel
will travel
9.
The number of terms in the finite arithmetic sequence (5, 9, 13, ..., 81) is:
20 terms
25 terms
21 terms
19 terms
10.
The second derivative d2y/dx2 of the function y = x4 - 2 x3 + 5 is:
12 x2 - 12 x
24 x - 12
12 x2 - 6 x
4 x3 - 6 x2
11.
A gas cylinder contains 10 liters of gas at a pressure of 3.0 atm. If the volume is reduced to 2.5 liters at constant temperature, the new pressure inside the cylinder will be:
12.0 atm
1.2 atm
7.5 atm
6.0 atm
12.
Reproduction by peaceful association in two adjacent threads of the spirogyra moss (Rem al-Barak) occurs in the case of:
Mild spring
Abundance of pure fresh water
The environment is exposed to drought, change in water purity, or change in temperature (unsuitable conditions)
Complete darkness
13.
The sum of the first 10 terms of the geometric sequence 2, 6, 18, 54, ... equals:
59,048
19,682
118,096
29,524
14.
Absolute zero temperature (0 Kelvin or -273.15 °C) is defined physically as the theoretical temperature at which:
Water reaches its maximum density
Atmospheric air completely combusts
The volume and pressure of an ideal gas theoretically extrapolate to zero and translational molecular motion reaches its quantum minimum
All liquids solidify into glass
15.
The n-th term of an arithmetic sequence with first term a and common difference d is given by:
T_n = 1/2 n (2a + d)
T_n = a + (n - 1) * d
T_n = a * rn − 1
T_n = a + n * d
16.
Which of the following oxides is amphoteric?
SO3
Na2O
MgO
ZnO
17.
Which of the following first-row transition metal ions exhibits the highest theoretical magnetic moment in its ground state?
Cr3+ ([Ar] 3d3 with 3 unpaired electrons)
Fe3+ ([Ar] 3d5 with 5 unpaired electrons)
Zn2+ ([Ar] 3d10 with 0 unpaired electrons)
Cu2+ ([Ar] 3d9 with 1 unpaired electron)
18.
The number of hydrogen bonds between the nitrogenous base pair guanine and cytosine (G - C) is:
3 Hydrogen bonds
4 Links
One bond
Two hydrogen bonds
19.
The common ratio r of the geometric sequence (64, 32, 16, 8, ...) is:
r = -1/2
r = 2
r = 1/2
r = 4
20.
A mercury manometer connected to a gas tank shows the mercury level in the free arm is 4 cm higher than the gas arm (Pa = 76 cm Hg). The gas pressure is:
76 cm Hg
4 cm Hg
80 cm Hg
72 cm Hg
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