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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.
Which of the following oxides is classified as an amphoteric oxide that reacts with both acids and bases to yield salt and water?
Sodium oxide (Na2O)
Sulfur trioxide (SO3)
Aluminum oxide (Al2O3)
Carbon dioxide (CO2)
2.
The chemical formula of aluminum sulfate is correctly written as:
Al3(SO4)2
AlSO4
Al2(SO4)3
Al(SO4)3
3.
Reproduction by peaceful association in two adjacent threads of the spirogyra moss (Rem al-Barak) occurs in the case of:
Mild spring
Complete darkness
Abundance of pure fresh water
The environment is exposed to drought, change in water purity, or change in temperature (unsuitable conditions)
4.
The number of hydrogen bonds between the nitrogenous base pair guanine and cytosine (G - C) is:
3 Hydrogen bonds
One bond
4 Links
Two hydrogen bonds
5.
Absolute zero temperature (0 Kelvin or -273.15 °C) is defined physically as the theoretical temperature at which:
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
Water reaches its maximum density
6.
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:
Vanadium (23V)
Cobalt (27Co)
Manganese (25Mn)
Scandium (21Sc)
7.
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
8.
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
9.
A metallic bond is physically described as the electrostatic attraction between:
Positive ions and negative non-metal anions
Protons and neutrons in the nucleus
Positive metal cations in the crystal lattice and the mobile sea of delocalized valence electrons
Dipole molecules in a polar liquid
10.
An aqueous solution of titanium(IV) chloride (TiCl4) is diamagnetic and colorless because:
Titanium is an alkali earth metal
Chlorine ions quench all magnetic dipoles
The Ti4+ ion has an electronic configuration of [Ar] 3d0, devoid of unpaired d-electrons
It absorbs all visible wavelengths of light
11.
The movement of tension in the tendrils of climbing plants such as peas and grapes depends physiologically on:
Secretion of gluey substances
Degeneration of tendril cells
Water loss through rapid transpiration
Slow growth of the area in contact with the support and rapid growth of the area far from it as a result of the varying distribution of auxins
12.
Acids are chemical compounds that dissociate in aqueous solutions to produce:
Hydrogen ions (H+ or hydronium ions H3O+), turning blue litmus paper red
Precipitated metallic salts
Sodium ions and chlorine gas
Hydroxide ions (OH-) turning red litmus paper blue
13.
If y = (2x + 1) * (3x - 4), then dy/dx evaluated at x = 1 equals:
12
-5
7
1
14.
The relative density (specific gravity) of a substance is defined as:
The ratio of the density of the substance to the density of pure water at 4°C
The product of density and the acceleration due to gravity
The mass of the substance divided by its volume at 100°C
The reciprocal of the buoyant force
15.
The fetal membrane that directly surrounds the fetus and secretes a fluid that protects it from shock and dehydration and facilitates its movement is:
Plasma membrane
Amniotic membrane (Chorion)
Amnion
Vitelline membrane
16.
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):
10 N
68 N
100 N
78 N
17.
Phenolphthalein indicator cannot distinguish between an acidic solution and a neutral solution because:
It is red in both
It is colorless in both
It is blue in both
It precipitates in both
18.
The nitrogen molecule (N2) contains a:
Coordinate dative bond
Triple covalent bond (one sigma bond and two pi bonds) sharing 3 electron pairs
Single ionic bond
Double covalent bond
19.
The mechanical advantage (eta) of an ideal hydraulic press equals all of the following ratios EXCEPT:
Distance moved by the small piston / Distance moved by the large piston (y1 / y2)
Work done by the large piston / Work done on the small piston > 1
Force on the large piston / Force on the small piston (F / f)
Area of the large piston / Area of the small piston (A / a)
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:
72 cm Hg
76 cm Hg
80 cm Hg
4 cm Hg
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