Curriculum
Login

Curriculum

English

Unit 1 - Advanced Grammar and Reading Comprehension

0/8

More lessons

0/46
Quiz

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

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 15
Start Quiz
1.
The electronic configurations of both Chromium (24Cr) and Copper (29Cu) are anomalous due to the enhanced stability associated with:
Pairing of all electrons in the outer valence level
Completely empty 4s subshells
Half-filled (3d5) and completely filled (3d10) d-subshells respectively
High electronegativity differences
2.
When dilute hydrochloric acid is added to a solid salt, a gas is evolved with a pungent odor that turns acidified potassium dichromate paper green while a colloidal yellow precipitate of sulfur separates in the reaction vessel. The anion is:
Thiosulfate (S2O32−)
Sulfite (SO32−)
Sulfide (S2−)
Sulfate (SO42−)
3.
A metal cation that forms a gelatinous white precipitate with NaOH which completely redissolves in excess reagent to form a soluble clear solution is:
Al3+ (due to the formation of soluble sodium meta-aluminate NaAlO2)
Fe2+
Fe3+
Ca2+
4.
In a titration experiment, 20.0 mL of 0.15 M H2SO4 is completely neutralized by 30.0 mL of NaOH solution. The molar concentration of the NaOH solution is:
0.20 M
0.05 M
0.30 M
0.10 M
5.
While the students ________ in the art workshop, the tour guide arrived.
are working
work
worked
were working
6.
Electric buses and monorails produce zero exhaust fumes, making them ________ forms of transport.
polluting
eco-friendly
noisy
dangerous
7.
Pascal's principle states that when pressure is applied to an enclosed, incompressible fluid, it is transmitted:
Undiminished to every portion of the fluid and to the walls of the containing vessel
With an exponential decay as distance increases
Strictly to compressible gases
Only downwards towards the bottom of the vessel
8.
A metallic cube of side length 10 cm and density 7800 kg/m3 is completely submerged in water (density 1000 kg/m3). The buoyant force (upthrust) acting on the cube is (g = 10 m/s2):
78 N
100 N
10 N
68 N
9.
When a gas trapped inside a rigid container of fixed volume is heated from 27 °C (300 K) to 127 °C (400 K), its pressure increases by a factor of:
16 / 9
4 / 3 (since P1 / T1 = P2 / T2)
127 / 27
2 times
10.
The pressure of a gas trapped inside an incandescent light bulb is 0.8 atm at room temperature (27 °C). When the bulb operates, the filament heats the gas to 327 °C at constant volume. The operational pressure is:
1.6 atm
1.2 atm
2.4 atm
0.96 atm
11.
If both the absolute temperature and the absolute pressure of a confined ideal gas are doubled, the volume of the gas:
Doubles to twice its original volume
Remains constant and unchanged
Quadruples
Decreases to one-fourth
12.
Which of the following compounds exhibits polar covalent bonding due to a significant difference in electronegativity between 0.4 and 1.7?
Chlorine gas (Cl2)
Sodium chloride (NaCl)
Water (H2O)
Methane (CH4)
13.
Solid ionic compounds such as crystal NaCl do NOT conduct electricity in the solid state because:
They decompose in the presence of air
Their ions are tightly locked in fixed positions within the rigid crystal lattice and cannot move freely
They contain no electrical charges
Electrons are moving too rapidly
14.
A metallic bond is physically described as the electrostatic attraction between:
Protons and neutrons in the nucleus
Positive ions and negative non-metal anions
Dipole molecules in a polar liquid
Positive metal cations in the crystal lattice and the mobile sea of delocalized valence electrons
15.
Which of the following oxides is classified as an amphoteric oxide that reacts with both acids and bases to yield salt and water?
Aluminum oxide (Al2O3)
Carbon dioxide (CO2)
Sulfur trioxide (SO3)
Sodium oxide (Na2O)
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15