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Unit 1 - Periodic Motion and Wave Mechanics

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Lesson 1 Quiz: Oscillatory Motion and Wave Mechanics

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1.
The main chemical reducing agent inside the Midrex furnace and its industrial source are respectively:
Water gas (mixture of CO and H2) produced from natural gas (methane CH4)
Pure carbon monoxide (CO) produced from metallurgical coke
Hydrogen gas produced from the electrolysis of water
Carbon dioxide mixed with limestone
2.
Concentrated nitric acid (HNO3) induces chemical passivity on the surface of iron metal due to:
Complete neutralization of the acid
The formation of an extremely thin, non-porous protective oxide film that halts further reaction
The instantaneous dissolution of iron into gaseous ions
The precipitation of elemental sulfur on the surface
3.
The indicator that exhibits a yellow color in acidic medium, blue in alkaline medium, and green in neutral medium is:
Bromothymol blue
Methyl orange
Phenolphthalein
Litmus solution
4.
While the students ________ in the art workshop, the tour guide arrived.
were working
are working
worked
work
5.
We visited the pottery village in Fustat ________ our holiday in Cairo.
when
as
while
during
6.
Watch out! The ladder is shaking violently. You ________ fall!
will
are going to
were
have
7.
The derivative of f(x) = 4 x3 - 5 x2 + 7 x - 9 with respect to x is:
f'(x) = 4 x2 - 5 x + 7
f'(x) = 12 x2 - 10 x
f'(x) = 12 x2 - 10 x + 7
f'(x) = 12 x3 - 10 x2 + 7
8.
Using the Quotient Rule, the derivative of y = (x + 3) / (x - 2) for x != 2 is:
5 / (x - 2)2
(2x + 1) / (x - 2)2
-5 / (x - 2)2
1 / (x - 2)2
9.
If f(x) = |x - 3|, the derivative f'(3) at x = 3:
Equals 1
Equals -1
Equals 0
Does not exist because the left-hand derivative (-1) does not equal the right-hand derivative (+1)
10.
Why are hydroelectric storage dams constructed with a base that is significantly thicker than the crest?
Because hydrostatic water pressure increases linearly with depth (P = rho * g * h), exerting immense overturning forces at the bottom
To reduce the gravitational pull of the bedrock
To prevent solar radiation from penetrating the foundation
To allow fish to swim upstream through drainage gates
11.
The Ideal Gas Law combining all empirical gas relationships is mathematically formulated as:
P / V = n * R * T
P * T = n * R * V
P * V = m * g * h
P * V = n * R * T
12.
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:
6.0 atm
12.0 atm
7.5 atm
1.2 atm
13.
The density of an ideal gas at temperature T and pressure P is rho. If the pressure is tripled and the absolute temperature is halved, the new density becomes:
3 rho
1.5 rho
6 rho (since rho is proportional to P / T)
0.67 rho
14.
The volume expansion coefficient at constant pressure (alpha_v) of an ideal gas is physically measured using:
Joly's bulb apparatus or Charles's apparatus with a dry mercury droplet index
A hydrometer
A torsion balance
A venturi meter and manometer
15.
An ionic bond is formed primarily between:
Positive metal ions immersed in a sea of delocalized electrons
Two non-metal atoms sharing pairs of valence electrons equally
A metal atom that loses electrons forming a cation and a non-metal atom that gains electrons forming an anion due to electrostatic attraction
Noble gas atoms at very low temperatures
16.
The reaction between an acid and a base to produce a salt and water is known as a:
Combustion reaction
Polymerization reaction
Thermal decomposition reaction
Neutralization reaction
17.
The movement of hydrotropism in plant roots is considered tropism:
Negatively
randomly
Positive (the root bends in the direction of moisture and water concentration)
Unaffected
18.
In the life cycle of the Plasmodium malaria parasite, the human infective phase is:
Merozoites
Kinetic phase (okinete)
Sporozoites
Gametophytes
19.
The motile phase (motile zygote / ookinete) in the life cycle of Plasmodium malaria is characterized by:
Haploid group N
It secretes malaria toxin
It is diploid (2N) and penetrates the mosquito's stomach wall and turns into an egg sac
It attacks red blood cells
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