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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.
The main chemical reducing agent inside the Midrex furnace and its industrial source are respectively:
Pure carbon monoxide (CO) produced from metallurgical coke
Hydrogen gas produced from the electrolysis of water
Carbon dioxide mixed with limestone
Water gas (mixture of CO and H2) produced from natural gas (methane CH4)
2.
A transition element whose +5 oxidation state compound (V2O5) is widely utilized as an industrial catalyst in the Contact Process for sulfuric acid manufacturing and as a colorant in ceramics is:
Scandium (21Sc)
Vanadium (23V)
Cobalt (27Co)
Manganese (25Mn)
3.
Concentrated nitric acid (HNO3) induces chemical passivity on the surface of iron metal due to:
The formation of an extremely thin, non-porous protective oxide film that halts further reaction
Complete neutralization of the acid
The precipitation of elemental sulfur on the surface
The instantaneous dissolution of iron into gaseous ions
4.
A person who skillfully makes beautiful objects by hand is called a/an ________.
artisan
scientist
engineer
pilot
5.
If y = (2x + 1) * (3x - 4), then dy/dx evaluated at x = 1 equals:
1
12
-5
7
6.
If y = sin(3x) + cos(2x), then dy/dx at x = 0 equals:
3
1
-2
5
7.
Boyle's Law states that for a fixed mass of an ideal gas kept at constant temperature, the volume V is:
Directly proportional to pressure
Independent of pressure changes
Directly proportional to absolute temperature
Inversely proportional to its absolute pressure P (P1 * V1 = P2 * V2)
8.
Acids are chemical compounds that dissociate in aqueous solutions to produce:
Hydroxide ions (OH-) turning red litmus paper blue
Hydrogen ions (H+ or hydronium ions H3O+), turning blue litmus paper red
Precipitated metallic salts
Sodium ions and chlorine gas
9.
The umbilical cord in the human fetus contains blood vessels that are characterized by:
One artery and two veins
Two arteries transport deoxygenated blood and waste from the fetus to the placenta, and one vein transports oxygenated blood and nutrients from the placenta to the fetus.
Devoid of blood vessels
All its vessels carry oxygenated blood
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